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Factorize quadratics and other expressions using the difference of two squares where the first term has a square coefficient other than 1. e.g. (ax)² - (by)² including removing a common factor from each term first.

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Math Games, Decimal Games, Fraction Games

Puppy Chase is a multiplayer math game that allows students from anywhere in the world to race against each other while practicing decimal conversion!

Save to an account!

Today's Top Players

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Math Games, Multiplication Games, Algebra Games

Swimming Otters is a multiplayer math game that allows students from anywhere in the world to race against each other while evaluating multiplication expressions!

Save to an account!

Today's Top Players

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Welcome to Wordshake, a word search game that makes learning words fun. Our Word of the Day is Visual! Solve the daily puzzle, play live Boggle games with others, and journey through a Quest of word challenges.

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Excavate! Egypt

Apply C3 skills in this middle school social studies game that brings the ancient civilization of Egypt to life through archaeology.

We are studying different civilizations this year and it's a FANTASTIC resource to help them make connections.

5th Grade Gifted Computer and Technology, Fort Walton Beach, FL

Excavating was great, and my favorite aspect of the game .

7th Grade Student, Ridley, PA

I LOVED the analysis questions because it assisted the kids in seeing the "big" picture and make connections.

5th Grade Social Studies, Canfield, OH

Questions regarding how to use in the classroom?

Contact Us.

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Apply C3 skills in this middle school social studies game that brings the ancient civilization of Egypt to life through archaeology. We are studying different civilizations this year and it's a FANTASTIC resource to help them make connections. 5th Grade Gifted Computer and Technology, Fort Walton Beach, FL Excavating was great, and my favorite aspect of the game .

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Country Toad is a geography game that provides practice in learning countries and their capital cities. The target capital appears under the toad. The student mus jump to the matching country, in the form of a lily pad, that floats toward the toad.

Content: Countries and capitals

Standards:

Grades: Grade 4, Grade 5, Grade 6

Players: 1

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Country Toad is a geography game that provides practice in learning countries and their capital cities. The target capital appears under the toad. The student mus jump to the matching country, in the form of a lily pad, that floats toward the toad.

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Construct A Bridge Video Game for Kids

Construct A Bridge is a 10-stage bridge building game where players use a limited amount of materials to build a structurally sound bridge, then pass a load across it to verify it works. Use your material wisely to build a strong bridge and earn a 3-star rating on each level. This game is published in HTML5 using lightweight JavaScript, meaning it should work on mobile devices and most modern web browsers like Apple Safari, Google Chrome, Microsoft Edge, and Mozilla Firefox. You can play this game on Microsoft Windows desktop and laptop devices, iPads, iPhones and Google Android mobile phones.

This game was published by MortgageCalculator.org as part of the money games for kids series.

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Construct A Bridge Game: Free Online Bridge Building Video Game for Kids

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Construct A Bridge is a 10-stage bridge building game where players use a limited amount of materials to build a structurally sound bridge, then pass a load across it to verify it works. Use your material wisely to build a strong bridge and earn a 3-star rating on each level.

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Earth | NASA Space Place – NASA Science for Kids

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Articles, games and activities about our home planet

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https://www.nytimes.com/games/wordle/index.html

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Guess the hidden word in 6 tries. A new puzzle is available each day.

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Welcome, Slope Man. You are one of the world's most adventurous mountain climbers. Your job is to climb ten of the world's tallest peaks by calculating the slope at different points in your climbs. Climb Mt. Fuji, Mauna Loa, Mont Blanc, and even Mt. Everest and others, but be careful --- wrong calculations will result in icy disasters.

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Slope Man - Using Slope to Climb Tall Peaks

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Welcome, Slope Man. You are one of the world's most adventurous mountain climbers. Your job is to climb ten of the world's tallest peaks by calculating the

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How were these built?

All our experiments are all built with freely accessible web technology such as Web Audio API, WebMIDI, Tone.js, and more. These tools make it easier for coders to build new interactive music experiences. You can get the open-source code to lots of these experiments here on Github.

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Music is for everyone. Play with simple experiments that let anyone, of any age, explore how music works.

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Chess.com - Play Chess Online - Free Games

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Play chess online for free on Chess.com with over 100 million members from around the world. Have fun playing with friends or challenging the computer!

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ReadWorks | Award-Winning, EdTech Nonprofit Organization

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ReadWorks is an edtech nonprofit organization that is committed to helping to solve America’s reading comprehension crisis.

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https://biomanbio.com/HTML5GamesandLabs/EvoClassGames/snurfleislandshtml5page.html

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Snurfle Islands!

Topics Covered: Natural selection, variation, adaptation, selective pressures, evolution, directional selection, stabilizing selection, disruptive/diversifying selection, fitness, etc.

Check out the worksheet that goes along with the game (courtesy of Mrs. Theresa Hartz)

Check out another worksheet that goes along with the game, courtesy of Ms. Julie Olson!

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Video computer games, virtual labs and activities for learning and reviewing biology content. Great for students and teachers.

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Race to Ratify drops you into 1787, where the ink is still drying on the new Constitution. Will it become the law of the land or will it fall into the dustbin of history? The fate of the young nation is in your hands!

Dive deep into the heated national debate over the future of a radical new plan for American government. Travel across the 13 states to hear from a diverse and opinionated cast of characters and use what you have learned to influence others through the social media of the time...pamphlets. Can you be a ratification influencer?

Are you an educator? Check out the Extension Pack with activities and teaching tools to reinforce key game concepts.

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Race to Ratify drops you into 1787, where the ink is still drying on the new Constitution. Will it become the law of the land or will it fall into the dustbin of history? The fate of the young nation is in your hands!

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At the dawn of a new society, how will you decide?

Play

Play Quandary on your phone

The Quandary app is available for Android and iOS phones via Google Play and the App Store.

Meet our Advisory Board!

We're thrilled to welcome our Quandary Advisory Board members! Quandary will be better and stronger thanks to their incredible expertise.

We extend a warm welcome to:

David Alsdorf

Matthew Farber

Javier Prieto

Kat Schrier

Rebecca Turco

New research shows Quandary's effectiveness

University researchers recently completed a nationwide study of Quandary and its research-based curriculum options.

Key findings

Increase in fact vs. opinion comprehension

Increase in self-reported perspective-taking

Increase in prosocial identities (concern for others)

Increase in positive perceptions of classroom climate with project-based curriculum

Universal teacher satisfaction and high student engagement

Planet Braxos needs your help!

When the people on planet Braxos can't resolve their dilemmas, they need help from you, their Captain. Settle disputes by considering facts, opinions, and solutions... and shape the future of a new civilization.

A free, nonprofit interactive learning game in ethical decision-making

Quandary engages students in ethical decision-making and develops skills that help them identify and resolve ethical issues in their own lives through engaging story and fun gameplay. There is no one right answer in the game, just as in real life. But each action has consequences that affect the player, others in the community and the planet Braxos.

From the creators of Zoombinis and Lure of the Labyrinth

Quandary was created by an award-winning team of experts across the fields of child development, social and emotional learning, and game design. The Learning Games Network partnered with scholars at Harvard and Tufts University and the MIT Education Arcade to design the game, which was produced by FableVision Studios.

"It seems to have hit a lot of that X factor in terms of a good idea, the fantasy element, beautiful artwork, the students really like [...] all the different characters, the time of the game play. [It] gets them thinking about ethics and decision-making in a concrete way."

"I use it every year in my geography curriculum to guide the students though conversations about a fantasy world and their environment, sustainability, and species, and then it's an easy connection to real ethical issues that we should grapple with on our planet."

" Quandary is really one of the few games that I think is designed for the classroom that really lives up to the hype."

"There were able to actually see the perspectives of their classmates."

" Quandary gets my students thinking. It provides great lessons in choice and consequences of decisions."

Stay Updated

Have you heard the latest Quandary and planet Braxos news? Sign up for our newsletter so you don't miss out.

Get started with Episode 1

Solve difficult problems as you lead a new society on planet Braxos. How will you shape the future of a new civilization?

Play Now

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Shape the future of a new society with ethical decision making. Play Quandary, a free educational online game to get kids motivated and excited to learn.

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CodeCombat - Coding games to learn Python and JavaScript

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Learn programming with a multiplayer live coding strategy game for beginners. Learn Python or JavaScript as you defeat ogres, solve mazes, and level up. Open source HTML5 game!

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Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.

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Games for tomorrow’s programmers. Block-based programming lessons for beginners.

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Aw snap! Google Earth isn't supported on your browser. You may need to update your browser or use a different browser. Please see our system requirements for more information. Chrome is a great choice and you can download it here.

Or if you're feeling adventurous, you can try Earth anyway by choosing an option below.

Learn more about Google Earth.

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Aw snap! Google Earth isn't supported on your browser. You may need to update your browser or use a different browser. Please see our system requirements for more information. Chrome is a great choice and you can download it here. Or if you're feeling adventurous, you can try Earth anyway by choosing an option below.

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Learn more and understand better with BrainPOP's animated movies, games, playful assessments, and activities covering Science, Math, History, English, and more!

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Use class code: 926FD82

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Use class code: 23F2BA4

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Choose your grade level of words from General sets and then select the gray words under "General Sets"

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The computer will randomly pick a term used in science. Discover the word the computer has picked by guessing which letters are in it. Each incorrect guess you make causes the atom man to decay. Solve the puzzle before the atom man completely decays!

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Ozaria - Computer science that captivates

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Ozaria is a computer science program, an adventure game, and a fantasy story where students master the lost magic of coding to save their world.

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Use class code: D052B50

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How were these built?

All our experiments are all built with freely accessible web technology such as Web Audio API, WebMIDI, Tone.js, and more. These tools make it easier for coders to build new interactive music experiences. You can get the open-source code to lots of these experiments here on Github.

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Music is for everyone. Play with simple experiments that let anyone, of any age, explore how music works.

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Lunch Line is a fun (and funny) game in which students practice their fractions, decimals, and percentages ordering skills. Students must arrange the celebrities and historical figures in a lunch line based on the values floating on top of their heads from least to greatest. If students arrange all ten correctly, the lunch line will proceed smoothly to the cafeteria in a straight line and they'll be able to print out a certificate showing the line leader. If figures are positioned incorrectly, the lunch line will stagger crookedly and inefficiently to the cafeteria, thereby angering the teacher.

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Lunch Line is a fun (and funny) game in which students practice their fractions, decimals, and percentages ordering skills. Students must arrange the celeb