Disclaimer:

It is very difficult to categorize any app as being appropriate for a particular grade/age level, since student abilities and needs vary so greatly. Also, many apps can be used across the curriculum, not just in any one particular subject area. Think outside the box when looking at apps and be sure to check out the general lists on our Apps for Education page. Many of these contain info on apps that my be appropriate for high school aged learners.

For You! (and maybe your students, too?)

See my Apps for Educators/Leaders page for more apps you can use

• Hot Apps For HOTS (ebook, available for free via iBooks app) "In this interactive resource, readers will cycle through 9 stations focusing on each level of Bloom's Taxonomy (from remembering to creating). Each station will include an apptivity with a specific app, example products, and additional resources to support iPad integration in the iClassroom." NOTE: "Books can only be viewed using iBooks on an iPad, iPhone (3G or later), or iPod touch (2nd generation or later.)"
• Socrative is a smart student response system that empowers teachers to engage their classrooms through a series of educational exercises and games via smartphones, laptops, and tablets. Student responses are visually represented for multiple choice, true/false and Short Answer questions. For pre-planned activities a teacher can view reports online as a Google spreadsheet or as an emailed Excel file. 
• Stick Pick ($2.99) For teachers' use. "Stick Pick is the first app of its kind to uniquely link question stems to the cognitive or linguistic needs of each individual learner. Teachers can have multiple soup cans (classes) filled with sticks (students). During setup, teachers choose a category of question stems they wish to focus on for each learner. Questions can be based on Bloom's Taxonomy, English as a second language skills, and degree of difficulty can be chosen for each learner."
• FlipBoard (free) RSS feed reader-"Fill Flipboard with the things you like to read, from niche blogs to publications like Rolling Stone and Lonely Planet, and use Instapaper or Read It Later to save articles to read later. Flipboard creates a single place to enjoy, browse, comment on and share all the news, photos and updates that matter to you. In addition to Twitter, Facebook and Instagram, you can flip through your newsfeeds and timelines from Google Reader, LinkedIn, Tumblr, Flickr and 500px on Flipboard."
• Vodio (free) "Take video consumption on the go to the next level, by creating your very own personalized video streams from dozens of content services. Free up your time by watching the most talked about videos, instead of searching through hours of videos you might like."
• T-Charts (free) Pros and cons/decision making chart. Great for students to use to evaluate apps as they use them!

Cross Curricular-Cross Grade Level: For Use in Just About Any Classroom

• PhotoTangler (lite, iPad $3.99, iPod $1.99) Lite version allows you to work with only 4 photos. "A simple yet powerful tool for turning your photos into beautiful collages! Simply import images or add text captions, and PhotoTangler will instantly blend them together as you work with them. Newly optimized for the iPad, PhotoTangler lets you work with and export higher resolution images."
• Comic Touch ($2.99) "Make your photos come alive by giving them the Comic Touch. Add balloons to give your subjects thoughts and words. Add captions to describe the scene or give the photo a title. Use the PhotoBooth-style warping effects to add some fun. Turn people into caricatures of themselves or give them bizarre expressions. Share your creations via email or save them back to the Photo Library for even more sharing options."
• Strip Designer ($2.99) Very full featured comic strip creator. More than a 100 strip templates with 1 to 9 photo cells or create your own layouts with up to photo 12 photo cells 
• iMovie (4.99) movie editing/creation-use your built in camera to capture video, then edit and publish right from your device. You also may want to look at Tutor for iMovie for iPad app for $3.99
• Posterous (free) Available on most all platforms, iOS, Android, works on tablets, phones, desk/laptops. "Make blogging much more immediate, support all types of rich media, allow for longer entries if needed, and support short spurts that auto-post to Twitter and Facebook as well." Jennifer Van Grove has written a great comparison of Posterous and Tumblr (a similar tool that was released prior to Posterous.) Within her post, she suggests all kinds of great ways to use Posterous, including easily turning an email list into a group blog.
• FreeSaurus (free) "a no-fuss thesaurus application. It's simple, it's focused and it works. Each definition shows related words, synonyms & antonyms."
• Dictionary.com (free) "delivers trusted reference content from Dictionary.com and Thesaurus.com. NO INTERNET CONNECTION IS NEEDED TO SEARCH WORDS. The app includes nearly 2,000,000 words, definitions, synonyms and antonyms. It also features audio pronunciation, voice-to-text search and Dictionary.com’s popular Word of the Day and Hot Word blog."
• Merriam Webster Dictionary  (free-supported by ads) "In addition to all the definitions from Merriam-Webster's Collegiate Dictionary, the app offers voice search – to let you look up a word without having to spell it – along with an integrated thesaurus, example sentences, Word of the Day, Favorites, and more. A great tool for reference, education, and vocabulary building."
• SimpleMind+ (free) "Mind mapping tool that turns your iPad, iPhone or iPod touch into a brainstorming, idea collection and thought structuring device."
• Popplet (lite/$4.99)  Brainstorming app. With lite version you can only create one Popplet-no save option.
• Speak It ($1.99) text to speech for students who have communication difficulties
• GoodReader ($4.99 for iPad or iPod) Annotate, manage, transfer and sync PDF files.
• Evernote (free) "helps you remember everything across all of the devices you use. Stay organized, save your ideas and improve productivity. Evernote lets you take notes, capture photos, create to-do lists, record voice reminders--and makes these notes completely searchable, whether you are at home, at work, or on the go." Be sure to add the "clip to Evernote" option to your mobile device to make it easy to save any web resource you find.
• Flashcards* (free) "Flashcardlet allows you to search for, study, and make local edits to Quizlet.com flashcards. Collaboratively creating and sharing study material does not get easier than Flashcardlet. You can email your flashcard decks or share them using Dropbox.  Any subject you can think of already has a Quizlet flashcard set that is perfect for studying. You can also create and share your own. Other flashcard apps can't handle large decks, deck sharing, images, intuitive gestures, or even manage to show nice looking cards. Flashcardlet feels like a real deck of flashcards and does not get in your way."
• A+ Pro Flashcards (free for a limited time, otherwise $4.99) import existing cards from Quizlet, draw your own images, record your own audio, email/backup up sets, Leitner spaced repition, easy user interface.
• iFlashCards ($2.99) Create your own flashcards-online or on the iOS device; can include text only or text and pics; includes a timer for taking quizzes 
• ShowMe (free) interactive, recordable white board-"ShowMe allows you to record voice-over whiteboard tutorials and share them online"
• ScreenChomp (free) a little less complex interactive, recordable white board. "create on-the-go tutorials, mathcasts, or any sort of screencast. It makes screencasting a portable option." 
• iBrainstorm (free-for iPad ONLY) brainstorming on your tablet. Has a companion app for iPhone, but it cannot be used without the iPad app.
• ScratchWork (free-iPad ONLY, requires iOS 5.0 or later) browser and notepad on one page
• SidebySide (free)-iPad ONLY) "A multiple-window reader/browser with offline reading and note taking capabilities. It turns the iPad into multiple resizable reading devices working in parallel." Different from ScratchWork in that you can have more than two windows open, they are resizeable and it has DropBox support built in.
• PreziViewer (free-iPad ONLY) set up and create Prezis online and then send to iPad to view and/or present them.
• Keynote ($9.99) Mac's version of PowerPoint--yes, you can import .ppt files to Keynote. You may lose some formatting when doing so. Best feature is that when connected for mirroring, you can view your presenter notes on your device while your audience sees only the slide.
• Videolicious (free) Create your own short (currently up to 50 second) videos on your iPad. 1. Choose your shots 2. Tell your story 3. Choose your music. Then Videolicious creates a finished video, edited and layered together like a professional video editor, automatically! NOTE: In its current version, developers recommend not using more than 5 or 6 still photos per video, as often, when trying to use 10, the app crashes. The developers are aware of this. It works better when you use short video clips instead of still photos. I spoke with Kevin from Videolicious on 2/20/12 and was told they are currently working on updating, but won't be releasing it until later in 2012, hopefully by the end of summer. My advice--get it now and check it out! Lots of classroom possibilities.
• SonicPics ($2.99) 1. Add images from your photo library or snap new ones with your camera. 2. Arrange your photos however you would like.
  3. Record a voice-over narrating your images as you swipe through them. Here's a link to an app review lesson plan you might want to use with your students (easily adapted for book reviews, step by step instructions, etc.) Thanks to Louise Duncan, Australian educator, extraordinaire, for sharing! Check out her blog--lots of great ideas!
• Scavenger Hunt with Friends (Lite, .99) Easily set up your hunts and complete the items on your list using the camera on your mobile device to provide evidence that you found the item. Set up one-on-one or multi-player hunts with your friends and compete to see who can complete the most items and rack up the most points. Get points based on the difficulty level of the item." I read about a library media specialist who used this app to create a library hunt so kids could learn how it was organized. 
• iBooks2 (free) The iBookstore now offers textbooks on Algebra, Biology, Chemistry, Geometry, and Physics from McGraw-Hill and Pearson. Currently only available to customers in the United States. Textbooks from Houghton Mifflin Harcourt are coming soon. Read a free sample of any book on the iBookstore before making it a part of your collection

  • Reorder your books on your bookshelf or browse them in a list sorted by title, author, or category

  • Organize your books and PDFs into personal Collections

  • Easily adjust your screen brightness to find the perfect lighting for any environment

  • Change the font size and pick from six included type faces to make your books more comfortable to read

  • Find a word, character, or phrase anywhere in your book with the built-in search feature

  • Keep your bookmarks, notes, and your current page wirelessly in sync between iPhone, iPad, and iPod touch with the automatic bookmark syncing feature

• iTunes U An entire course in one app. The free iTunes U app gives students access to all the materials for your course in a single place. Right in the app, they can play video or audio lectures. Read books and view presentations. See a list of all the assignments for the course and check them off as they’re completed. And when you send a message or create a new assignment, students receive a push notification with the new information.

Pinterest (free) Pinterest is a Virtual Pinboard. It lets you organize and share all the beautiful things you find in your life. People use pinboards to plan their weddings, decorate their homes, and organize their favorite recipes. Best of all, you can browse pinboards created by other people. Browsing pinboards is a fun way to discover new things and get inspiration from people who share your interests. Features:

• Browse pins from people and pinboards you follow.
• Repin, like and comment on your favorite pins.
• Pin with your camera!

• Edmodo (free) Facebook-like social networking space for your classroom "makes it easy for teachers and students to stay connected and share information. Use your iOS device to send notes, submit assignments, post replies, and check messages and upcoming events while away from the classroom. Teachers can post last-minute alerts to their students, keep tabs on recent assignment submissions, and grade assignments. Students can view and turn in assignments and check their latest grades."
• TED (Free) also available for Android OS Riveting talks by remarkable people, free to the world. TED's official app presents talks from some of the world's most fascinating people: education radicals, tech geniuses, medical mavericks, business gurus and music legends. Find more than 900 TEDTalk videos (with more added each week) on the official TED app -- now for both iPad and iPhone.
• Bump (Free) also available for Android OS. "Use Bump™ to share contact information and photos by simply bumping two phones together. Just open [and set up] Bump, hold your phones, and gently bump your hands together -- Bump will magically do all the rest." Bump also allows you to instant message anyone you've "Bumped."
• EasyBib (Free) "Create accurate MLA, APA, and Chicago style citations in seconds by scanning a book bar code or by typing the name of a book. Build and manage your works cited. Once done, email your citations and then export your citations to EasyBib.com's popular bibliography management service. Works best with iPhone 4. Also works with iPad and iPod Touch, but camera on these devices requires that barcodes need to be held steady and at a proper distance for the scanner to pick up."

AND Don't forget about the Khan Academy, now in app form as well as online. (all Free!) "With a library of over 2,600 videos covering everything from arithmetic to physics, finance, and history and 303 practice exercises, we're on a mission to help you learn what you want, when you want, at your own pace." NOTE about the app version: You will not get official credit for watching the videos and cannot do the exercises. It's just a convenient way to watch the videos for those who are learning just for the sake of learning. 

Language/Literacy

• Rory's Story Cubes ($1.99) picture story starters
• Shake a Phrase ($1.99) story starters
• MomentDiary (free) This is a private diary that makes notes with timestamps. You can take a short note and use it as a private diary, simple business note, diet record, food log, lifetime recording, cash flow record, jotting down what you watch on TV, song titles while you listen to radio...etc.
• Grammar Up (free edition or $4.99) "Grammar Up is a multiple choice quiz system for English which provides over 1800 questions across 20 grammar categories.
  The app was designed to replicate questions with a business focus commonly found in the popular TOEIC (TM) English proficiency test. Grammar Up can help learners to improve their grammar, word selection and vocabulary." Essentially a multiple choice quiz for various parts of speech. I doubt students would consider it a "game" as the developers call it. Could be an alternative for review purposes. Custom timer setting can assist learners to improve response times under exam time constraints.
• Storylines for Schools) (free) Think the old game "Telephone" with visuals! "You begin a StoryLine with a common saying. A friend grows the StoryLine by illustrating that saying. Another friend titles that drawing (without seeing the original saying). Yet another friend illustrates that title, and so on. Save your favorite completed StoryLines in your Gallery, and share them on Facebook."
• Poetry Creator/Verses (free) "a fresh spin on a cherished classic: refrigerator magnet poetry. We built this app to set your creativity ablaze with Verses's limitless word mixing possibilities that allow you to become a kind of dictionary DJ. After creating a poem out of your own personal mix of dictionaries, you can send your creation to friends via email or publish it in your Facebook photo album! (network connectivity required.)" Limited vocabulary included in free version. Other dictionaries are in-app purchases for .99 per list
• ScribblePress (free-iPad ONLY, requires iOS 5.0 or better) "a book creation platform that allows kids to imagine, create and share their own stories with great drawing and writing tools. Download your books instantly to your iBooks library! Scribble Press for iPad makes it easy to create an ebook – either write your own or use one of over 50 story templates." You can also order printed copies of books, but they are pricey. If you need a printed copy of the book, consider doing a screen capture (click the on/off button and "home" buttons simultaneously) and you'll have a saved copy of the page in Photos, which you can then email and/or print. 
• Book Creator for iPad ($4.99 iPad only) "create your own beautiful iBooks, right on the iPad. Read them in iBooks, send them to your friends, or submit them to the iBookstore. Ideal for children’s picture books, photo books, art books, cook books, manuals, textbooks, and the list goes on"
• GrammarGirl Podcasts (free from iTunes - although there is also an app for that at $1.99) "Great tips to help you write more intelligently and effectively...The Grammar Girl show has been in the iTunes top 100 for three years, and Grammar Girl has written a New York Times best-seller and appeared on the Oprah Winfrey Show." 
• BrainBlaze Word Roots ($3.99) learn 156 important Greek and Latin word roots. These word roots are essential to learning advanced vocabulary words, such as those found on the SAT and GRE. To help you learn, each flash card displays an easy word and two more difficult words derived from the word root. Use the easy word as a mnemonic device to help you remember the meaning of the word root.  
• Painless Grammar Challenge (free) Description from app review by Austin Stroud: "This game is a fun way to review grammar leisurely or use as a refresher before taking an English class. It is from Barron's who is a big name in study guides for all ages. The concept behind this grammar challenge is simple in that you take a quiz, and if you score high enough you get to play a game. The game does not unlock/become available until you have gotten the required score. For quiz 1, for example, you have to get an 80%. The major flaw with this game is that you just are told your percentage at the end, and not told what you missed or an explanation on what you missed. If you are looking for a fun way to learn grammar, this is worth your time. However, for studying you should pick a different app."  
• The Apostrophe Song (.99) The Huffington Post review: "Can the new Apostrophe Song cure the apostrophe crisis? A sort of Schoolhouse Rock for the internet age." You can find the original version of the song (80's synth style version) on YouTube (unless it's blocked at your school!) or you can buy the app and get the song as well as tests of your students’ skills and progress using ‘race against the clock’ multiple-choice quizzes. Choose from rock, hip-hop, pop/dance or acoustic musical styles.
• Grammar Prep: Parallelism  $3.99 "Created by Pearson, GrammarPrep is the first grammar app built specifically for college students and professionals. With multimedia tutorials, quizzes and mastery tests, answer feedback, and progress tracking, it is the only grammar app that offers proven, educational-quality content.
  - Learn how to recognize and correct common grammar errors through instructional videos and podcasts
  - Assess your skills and see what you know with “Practice Tests”
  - Test yourself with “Mini Tests”
  - Track your improvement through the “High Scores” progress tracker"
• Shakespeare in Bits (free-two sample scenes from Romeo and Juliet and Hamlet, each Shakespeare play is offered as a separate purchase. Pricing can be found on the developer's home page which can be accessed from within the app at $14.99. (Available through Apple's VPP)  "Hear it, See it, Read it. Two-and-a-half hours of high-resolution animation with professional audio soundtrack helps you to decode and comprehend Shakespeare’s fertile prose quickly and efficiently. The text, presented side-by-side with animated action, is easy to follow with portions of text being highlighted as they are being spoken in the play. The integrated combination of text, audio and graphics is designed to facilitate learners of varying abilities and learning styles. Biographies for each cast character can be accessed from the main play or through a dedicated Cast feature. An illustrated character relationship map demonstrates key characters and their inter-relationships in the play. Each Shakespeare In Bits title provides a wide selection of integrated analyses and study notes for each scene to help you understand plot summaries, key themes, language, imagery and quotes from the play."

Social Studies

• History: Maps of the World (Free) tons of historical maps
• HistoryPin (free) "Discover windows into the past by seeing and interacting with the history all around you. The official Historypin app reveals photos near your current location and allows you to view them layered over the modern scene in front of you. You can also explore Collections of some of the best old photos from around the world, wherever you are. You can add your own piece of history and pin it to the map, too, by using your phone to digitize an old photo, capture a modern moment of historic importance, or take a modern replica of a photo on the app"
• WorldBook:This Day in History (free for iPad; .99 for iPod!) "An interactive calendar which displays significant historical events that took place on the current day or any selected day. Navigate to any another date or skip forward and back a day at a time. Find out what famous people and events share your birthday." The iPad app does have more features--not sure why it's free and the iPod one is not?!
• Teen Voices of Democracy (free)  Teen Voices of Democracy is a collection of articles written by high school students about social and political issues that affect them and their families.
• Newspapers (.99) from all over the world-in the language of that country, including USA Today, BBC News, etc.
• MyCongress (free-iPad ONLY) "A portal to detailed information about your elected U.S. Congressional officials. Track their news, video and Twitter feeds. Look up their official Open Congress profile or contact them directly. MyCongress helps you get in touch with your government."
• Qwiki (free) Qwiki combines thousands of sources to present concise, interactive summaries of millions of people, places and things in an experience optimized for the iPad. Explore topics by searching or browse a worldwide map highlighting landmarks, monuments, cities, towns, and more.
• USA Factbook and Quiz (.99-sale price as of 4/17/12, regularly $1.99)   Features include:
  - Most important documents - Declaration of Independence, Articles of Confederation, Constitution with amendments, including the Bill of Rights.
  - USA Basic Facts about the country in general
  - All 50 US states facts with description
  - Maps: Regions and Highways, US Highways, USA with state names, United States Painted Relief, Largest ancestry, US Territorial Acquisitions, USA Topographical Map, US Music Map
  - USA Anthem with lyrics (karaoke)
  - USA Flags as wallpapers
  - Major Cities - 100 most populated US cities
  - US Presidents
  - Quiz : Capitals and State Locations 
• 7 Billion ($4.99) "National Geographic magazine presents 7 Billion: How your world will change - to coincide with the arrival of the 7 billionth human being to our world. This app explores the challenges of a growing human population in a world of limited resources with informative videos, interactive maps, in-depth articles, and stunning photography." One teacher reviewer says "Students love it and are more engaged in environmental subjects because of it."
• TourWrist (free for iPad ONLY) Visit some of the world's wonders in a new way! "iOS devices become portals. So when you point your device up, you’ll truly appreciate a new property’s grand staircase. Turning around will give you the full stadium seating experience. And looking down will reveal just how much leg space a vehicle has to offer. You can also view "tours" through our intuitive, touch-based controls. Check out travel destinations one minute, hotels and restaurants the next, or even look inside new homes. PLUS, the iPhone app now includes an integrated panoramic photography feature, meaning you can shoot and share in just seconds! With powerful creation, search, sort and sharing tools, TourWrist® gives you the power to travel, remotely."
• Trade Fields (Free) "TradeFields is a game designed to enter the world of trading and share experience among your friends."
• Bloomberg (Free) "Bloomberg offers news, stock quotes, company descriptions, market leaders/laggers, price charts, market trends analysis, and more. You are also able to create a customized list of stocks that you want to follow from markets around the world."

Creative Arts/Music

• Brushes (iPad edition, $7.99/iPod edition $4.99) Very full featured painting/drawing application. Also, for Mac OS X, there's Brushes Viewer is a free application that allows you to replay your Brushes paintings stroke for stroke. Great for art teachers!
• 360 Panorama (.99) Note: app only works with devices that have built in cameras as it uses the camera to create a 360 degree photo. Recommend you use a tripod when taking the photos.
• DoodleBuddy (free) "Doodle Buddy Gold is the most fun you can have with your finger! Finger paint with your favorite colors and drop in playful stamps. Connect with a friend to draw together over the Internet."
• Garage Band ($4.99) "GarageBand turns your iPad, iPhone and iPod touch into a collection of Touch Instruments and a full-featured recording studio — so you can make music anywhere you go. Use Multi-Touch gestures to play pianos, organs, guitars, drums, and basses. They sound and play like their counterparts, but let you do things you could never do on a real instrument. Enjoy a full range of Smart Instruments that make you sound like a pro — even if you’ve never played a note before. Plug an electric guitar into your iPad, iPhone or iPod touch and play through classic amps and stompbox effects. Use the built-in microphone or a guitar to record, or capture any performance. Then mix up to eight tracks to create a song you can share."  
• Karajan Beginner (free- paid version is $14.99) free version is a basic music and ear trainer. Lessons to recognize intervals, chords, scales, pitch and tempo
• Guitar Chords Library ($2.99 iPad ONLY) Guitar chord library with over 8700 different variations

Math

• Convert Units (free) "custom conversions and real time currency conversions that are updated live! This free (yes, free) application lets you create your own unit conversions for anything you want, quickly and easily." 
• TimesBy-.99: practice multiplication tables and learn the patterns that make multiplying easier
• Talkulator (free) Talking calulator that also speaks in seven major languages (some customer complaints about the accuracy of the languages, but hey, it's free!:-)   
• DiaMath (.99) Algebra Learning Tool. "a fun and challenging way to improve your problem solving skills. The principle of DiaMath is to solve for the two empty spaces in the diamond. The rule for a diamond patterns is: Add the left and right numbers together to get the bottom number (sum); multiply the left and right numbers together to get the top."
• TouchCalc (free)  A comfortable calculator program and offers several different modes.
  - The scientific mode offers all the usual functions and operations like the basic arithmetical operations, power, logarithm, roots, trigonometry etc.
  - The bit/integer mode offers logical operations (AND, OR, XOR, >>, etc.) on bit level. All values can be displayed as binary, octal, decimal or hexadecimal numbers. Calculations can be done in 8, 16 32 or 64 bits.
• Quick Graph (free) Advanced features are in-app purchase of $1.99. "a powerful, high quality, graphic calculator that takes full advantage of the multitouch display and the powerful graphic capabilities of the iPad and iPhone, both in 2D and 3D. A simple, yet intuitive interface that makes it easy to enter and/or edit equations and visualize them in mathematical notation." - In the statistics mode you can create a sample by adding several values and then calculate mean, median, quantil values, variance, standard deviation, range etc.  
• Mortgage Calulator (free) Apply math to real life situations: The user friendly interface allows you to enter the property cost, interest rate, the term of the loan desired (years and months) with all adjustments including down payment ,taxes and insurance and generates these calculations: Total Interest Paid, Total Amount paid, Monthly payment, Price/sqft
• Abacus (.99)  When you want to calculate the old fashioned way!
• RulerPlus (free) 2 inch accurate ruler--press the + and extend the readings 
• Mathematical Formulas (.99) when you need help remembering formulas-algebra, trig, geometry, integrals and more 

Science

• Project Noah (free) "the best way to share your wildlife encounters and help document our planet's biodiversity." Get your students involved in becoming citizen scientists
• Leaf Snap (free) "the first in a series of electronic field guides being developed by researchers from Columbia University, the University of Maryland, and the Smithsonian Institution. This free mobile app uses visual recognition software to help identify tree species from photographs of their leaves"
• Frog Dissection ($3.99-iPad ONLY!)  "a greener alternative for teaching dissection in the classroom. This iPad app is suitable for middle-school students who are learning about organs and organ systems as part of their life science curriculum. Students can try dissecting a virtual specimen with all the trappings that come with the real procedure-minus the mess of course!"
• Virulent  (free-iPad ONLY) "An action/strategy game that was designed and developed by the Education Research Challenge Area at the Morgridge Institute for Research, a non-profit biomedical research institute. This game was designed in collaboration with the Systems Biology research group at the Wisconsin Institute for Discovery and a faculty member from the Medical Microbiology and Immunology department at the University of Wisconsin - Madison." Challenging!
• NASA Visualization Explorer (free) "The coolest way to get stories about advanced space-based research delivered right to your iPad. A direct connection to NASA’s extraordinary fleet of research spacecraft, this app presents cutting edge research stories in an engaging and exciting format. See the Earth as you’ve never seen it before; travel to places otherwise unavailable to even the most intrepid explorers! Download it now, tap into the power of NASA’s cutting-edge research today and check for new stories every week!"  
• 3D Brain (free) rotate and zoom in on brain structures
• Cell and Cell Structure ($2.99) Comes with three main menu options once you launch the app – All About Cell, Interactive Activities, and Videos. All About Cell offers you an in-depth understanding of what cells look like when viewed up close, their structure, and functions. This section comes with each topic in a question format that the user has to tap to learn more. Once you are in the topic, you can explore further and learn in detail. The Interactive Activities section allows you to test your understanding through a quiz, word search, and flash cards. The flash cards that are part of the activities are the perfect way for students to review and retain material. Each picture comes with concise information about that part of the cell. Word search will help students refresh their memory about all the cell parts and even help them remember the spellings! The Videos section of the app takes the user right into a cell and gives a microscopic view of a cell.
• StarWalk ($2.99) interactive astronomy guide ALSO: Check out The Night Sky which is very similar and is on sale for .99 as of 2/20/12
• The Elements: A Visual Exploration ($13.99-iPad ONLY) 3D periodic table--beautiful way to learn the elements!
• Science 360 (free-iPad ONLY) "The National Science Foundation’s (NSF) Science360 for iPad provides easy access to engaging science and engineering images and video from around the globe and a news feed featuring breaking news from NSF-funded institutions. Content is either produced by NSF or gathered from scientists, colleges and universities, and NSF science and engineering centers."
• Coaster Physics (.99) "What are the laws of Physics governing the motion of a roller coaster? How are speed and acceleration related? How does the g-force change at different points along the track? Design and ride your very own realistic roller coaster, and see how quantities like speed, acceleration, energy and g-force change as you ride along the track."
• TinkerBox HD (free-iPad ONLY) "TinkerBox is a fun, free-to-play physics puzzle game. While it is full of interesting science facts and teaches basic engineering concepts. Take the tools in your hands to explore your creativity and imagination with Invent mode. Build outrageous machines, share them with your friends, or download popular inventions online at http://www.tinkerboxnews.com."
• Electric Box (free) Fun, challenging game! The goal of the game is simple: get power from the source to the target using items like tea kettles, laser beams, refrigerators & light bulbs. The mechanics are simple, so you can pick the game up and start playing right away, but the game is deep enough to stay challenging for hours.

Guidance

(NOTE: these are most likely best for 9th grade and lower)

• Middle School Confidential 1-Be Confiden (free) -Graphic novel "based on Book 1 of the award-winning Middle School Confidential™ series written by teen expert Annie Fox, illustrated by Matt Kindt, and published by Free Spirit Publishing. This graphic novel app enables readers to zoom right into the story world. With beautiful full-color illustrations and richly layered audio made up of movie-like sound effects and music, Be Confident will be a sure-fire hit with 8–14 year olds. As a bonus for parents and teachers, this app puts thought-provoking entertainment and solutions into the hands of teens who deal with these personal issues every day. It will challenge teens to think about their emotions and behavior in new ways and encourage them to make more respectful, cooperative choices at school and at home."