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## 216 mind-stretchers results | sort by: Most Recent First Alphabetical Most Viewed First

### Magic Gopher - Solitaire Paradise

4 to 12
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Magic Gopher is an entertaining math riddle game. Follow the instructions to select a two-digit number, add the digits then subtract that answer from the original number. Magic Gopher "guesses" the sy... more
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Magic Gopher is an entertaining math riddle game. Follow the instructions to select a two-digit number, add the digits then subtract that answer from the original number. Magic Gopher "guesses" the symbol located next to that final number.

tag(s): riddles (20), addition (307),

#### In the Classroom

How does Magic Gopher guess correctly every time? Encourage students to discover the "trick" to his success. If you aren't sure, find the solution here. Take this math trick a bit further, will it work with 3-digit numbers? Challenge cooperative learning groups to create video explanations of the math behind Magic Gopher. If you are less experienced with technology use with your students, try a tool such as Powtoon, reviewed here. Those who are more experienced might try moovly, reviewed here, and share them on a site such as TeacherTube, reviewed here.

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### Shikaku Madness - Ganbaru Games

4 to 12
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Shikaku Madness is a logic-based puzzle where you attempt to cover a grid with rectangles. Use the numeric clues on the grid to solve the puzzle. Tap and drag on the grid to create rectangles that don... more
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Shikaku Madness is a logic-based puzzle where you attempt to cover a grid with rectangles. Use the numeric clues on the grid to solve the puzzle. Tap and drag on the grid to create rectangles that don't overlap and contain the number of squares in the clue. Choose from four levels of difficulty when attempting puzzles.

tag(s): logic (326), problem solving (407), multiplication (285), computational thinking (56),

#### In the Classroom

Shikaku Madness is an excellent addition to classroom bookmarks for practicing multiplication, working with arrays, developing problem-solving skills, and using logic. Encourage students to work up to the next level and become an expert in Shikaku. Share a link to the site on your class website for students to access at home. Encourage Shikaku "experts" in your class to share their methods for completing each puzzle with other students. Transform learning by challenging students to create a video demonstrating their process in puzzle solving using a tool such as Free Screen Recorder Online, reviewed here, or Screencastify (Chrome app), reviewed here. Then share it using a tool like SchoolTube, reviewed here.

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### Game-Based Learning Resources - TeachersFirst

K to 12
3 Favorites 0  Comments
This collection of reviewed resources from TeachersFirst is selected to help teachers and students learn about game-based learning and how to incorporate games into teaching and learning. Engage your ... more
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This collection of reviewed resources from TeachersFirst is selected to help teachers and students learn about game-based learning and how to incorporate games into teaching and learning. Engage your students in the way they love to learn - games! Explore resources for quick practice or create your own games using these tools. Nurture problem solving, logic, and creativity.

tag(s): logic (326), coding (130), differentiation (129), gamification (122), game based learning (255),

#### In the Classroom

Share these tools on your class website or blog for students to use both in and out of the classroom. Use these tools to differentiate and reach all students at the various levels. Challenge your students to create their own games for review of content or acceleration options.

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### Playbuzz - Shaul Olmert and Tom Pachys

9 to 12
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Create and share interactive content with Playbuzz. Browse through to find and participate in polls, quizzes, trivia, and much more. Additional free features include a Video Snaps tool for sharing por... more
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Create and share interactive content with Playbuzz. Browse through to find and participate in polls, quizzes, trivia, and much more. Additional free features include a Video Snaps tool for sharing portions of a video and Flip Cards. Create an account, then make content to embed and engage with other participants. Warning: this site contains content that is not moderated, be sure to view information before sharing with students.

tag(s): DAT device agnostic tool (248), trivia (30), video (457), flash cards (74), quiz (131), polls and surveys (91),

#### In the Classroom

Share Playbuzz with students to create interactive classroom content. Have students create polls for favorite characters in books, use the Video Snaps tool to share significant portions of a video, or use Flip Cards in place of traditional flash cards. Create interactive content for your classroom lessons including trivia to introduce new lessons or create a Gallery Quiz to match images to clues. The possibilities are as unlimited as your imagination and those of your students!

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### Flappy Code - Code Studio

K to 12
1 Favorites 0  Comments

Create a Flappy Bird game using drag and drop code, then save it to your phone to play over and over! Follow the 10 step directions to add code to your workspace as you make your bird fly toward a tar... more
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Create a Flappy Bird game using drag and drop code, then save it to your phone to play over and over! Follow the 10 step directions to add code to your workspace as you make your bird fly toward a target, give directions for the end of game results, and edit actions and speed of the game. When finished, share games via URL or social networking links. The intro video resides on YouTube. If your district blocks YouTube, the video may not be viewable.

tag(s): computers (164), computational thinking (56), critical thinking (186), coding (130), gamification (122), game based learning (255), logic (326),

#### In the Classroom

Use Flappy Code as an interesting way to introduce coding to your class. Display Flappy Code on your interactive whiteboard or projector as you progress through the steps to code a game, then have students create and explore on their own. After school clubs and activities can use Flappy Code to learn to code. Use this tool with gifted students for a great challenge. Set up a coding activity center for interested students when they finish class work or for rainy days and snow days. Share this link on your class website for students to access both in and out of the classroom.

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### Novel Engineering - The Novel Engineering Project/Tufts Center

K to 12
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Novel Engineering offers an integrated approach to teaching engineering with literacy. Learn about it through the short video on the home page. To find ideas, select the "BOOKS" link at the top of the... more
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Novel Engineering offers an integrated approach to teaching engineering with literacy. Learn about it through the short video on the home page. To find ideas, select the "BOOKS" link at the top of the page. Choose from several well-known books to find the engineering problem(s) in the book and possible solutions from students.

tag(s): problem solving (407), engineering (200), STEM (353),

#### In the Classroom

Don't let the simple look of this site fool you; this is an excellent resource for incorporating STEM topics into your reading activities. Use ideas from this site with the literature suggested, then come up with your own ideas for any other selection of literature. If you are beginning the process of integrating technology, have students create blogs sharing their learning and understanding using Telegra.ph, reviewed here. This blog creator requires no registration. Have students or groups collect ideas and findings using Padlet, reviewed here. The Padlet application creates free online bulletin boards.

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### HTML 5 Crossword Generator - Class Tools

3 to 12
1 Favorites 0  Comments

Create personalized crossword puzzles to embed on your blog or website with this easy puzzle creator. View the help for the directions and examples. It is as simple as typing a question on each line f... more
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Create personalized crossword puzzles to embed on your blog or website with this easy puzzle creator. View the help for the directions and examples. It is as simple as typing a question on each line followed by an asterisk, then the correct answer. When complete, submit to view your puzzle online and choose from different options for sharing. Also, you can download puzzles as PDF documents.

tag(s): puzzles (269), crosswords (25),

#### In the Classroom

Create puzzles for any subject or topic for review or introduction to new materials. Allow students to create puzzles for other students to solve. Add a puzzle to the classroom newsletter or blog to create interest. Share puzzles on an interactive whiteboard for students to solve together.

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### Solvemall Crosswords Online - Solvemall.com

5 to 12
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Solvemall offers a large variety of online crossword puzzles. Choose from a new daily starter puzzle each day or scroll down to find popular sets. In addition to the daily puzzle, most days also have ... more
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Solvemall offers a large variety of online crossword puzzles. Choose from a new daily starter puzzle each day or scroll down to find popular sets. In addition to the daily puzzle, most days also have a special topic puzzle such as inventors or musicians. Simply fill in each space on the puzzles with your responses and check when finished to view results. Solve blocked puzzles and collect points by creating a free account.
This site includes advertising.

tag(s): puzzles (269), problem solving (407), crosswords (25),

#### In the Classroom

Share the puzzles on your interactive whiteboard or projector to play as a class. Use as a learning center or for rainy day recess. Create a link to the puzzles on classroom computers or your class website. Crosswords are a great find for use with gifted students to practice logic and problem-solving skills. Challenge students to create their own crosswords using a tool like Eclipse Crossword Creator, reviewed here, or Just Crosswords, reviewed here.

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### USPTO - United States Patent and Trademark Office - United States Patent and Trademark Office

3 to 12
2 Favorites 0  Comments

Visit the United States Patent and Trademark Office (USPTO) to help kids of all ages learn about trademarks and patents, and the importance of intellectual property creation and protection. USPTO feat... more
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Visit the United States Patent and Trademark Office (USPTO) to help kids of all ages learn about trademarks and patents, and the importance of intellectual property creation and protection. USPTO features "collectible" cards of inventor profiles, activities at different levels - including videos about the paticulars of patents, trademarks, and more. In another video section are videos with age appropriate appeal, and titles like Driverless Cars, Bionic Limbs, Biofuels, Electronic Tattoos, and more. The invention and design focus of most of the activities makes for perfect STEM and "maker space" lessons. If your district blocks YouTube, the videos may not be viewable.

tag(s): video (457), inventors and inventions (147), STEM (353), crafts (79), sound (135), sports (157), digital citizenship (139),

#### In the Classroom

Whether an elementary, middle, or high school teacher you'll find ideas for building model rockets and more. Use an interactive whiteboard or projector and start by viewing the video on the home page titled Extraordinary Innovations. Or, in your blended or flipped class have students watch the video at home and enhance their learning by using playposit, reviewed here, to take notes, make comments, or ask questions to document what they learned from the video. Be sure to have a small or whole group discussion about what they learned from the video using their notes & comments the next day! At the end of your lesson or unit on patents and trademarks, transform learning by challenging students to create a timeline for the invention of the snowboard, or motorcycles, or another topic of interest. Why not modify classroom technology and make this an interactive timeline with music, photos, videos, and more using Timeline JS, reviewed here.
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### Technovation Families - Iridescent

4 to 12
2 Favorites 0  Comments

Technovation Families: Curiosity Machine connects scientists and engineers with young people to help design and create projects together. Create an account to begin using features on the site. Discove... more
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Technovation Families: Curiosity Machine connects scientists and engineers with young people to help design and create projects together. Create an account to begin using features on the site. Discover challenges to build on your own, including categories such as aerospace, robotics, engineering, and more.See the menu on the left to see them all. Find inspiration by watching videos of scientists and engineers sharing their inventions. Share your finished projects as inspiration for other aspiring engineers and scientists.

tag(s): design (159), STEM (353), problem solving (407), robotics (44), engineering (200), aeronautics (16), computers (164), oceans (243), gifted (159), makerspace (50), inventors and inventions (147),

#### In the Classroom

Be sure to take advantage of the free educator units offered with membership. Share project ideas with students as ideas for a school science or engineering fair. Share this site with students interested in exploring careers in science or engineering. Encourage students to enhance their technology use and learning by using a visual blogging tool such as Telegra.ph, reviewed here. With Telegra.ph you just click on an icon to upload images from your computer, add a YouTube or Vimeo, or Twitter links (no registration required), to document their progress while completing projects. Have gifted students choose projects from the site to complete as enrichment within different learning units.
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### Bill's Games - Bill Kendrick

4 to 12
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Bill's Games offers a variety of free online activities and puzzles. Although this site is "plain vanilla," there are classic activities that offer challenges for all ages. Scroll through the home pag... more
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Bill's Games offers a variety of free online activities and puzzles. Although this site is "plain vanilla," there are classic activities that offer challenges for all ages. Scroll through the home page to find puzzles, board games, mazes, and word games. Each activity includes directions for play and many offer options for difficulty levels.
This site includes advertising.

tag(s): game based learning (255), problem solving (407), logic (326), puzzles (269),

#### In the Classroom

Share and demonstrate the activities on an interactive whiteboard. Create a link on classroom computers to use as a center. Challenge students to increase difficulty levels in games and activities. Ask students to journal about their problem-solving process when playing games and activities.

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### The Griddle - Handcrafted Logical Fun - David Millar

4 to 12
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The Griddle offers a small selection of math and logic puzzles. Choose from puzzles for younger students including Sudoku and Number Soup. For older students check out a Sudoku or Conflict Graphing pu... more
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The Griddle offers a small selection of math and logic puzzles. Choose from puzzles for younger students including Sudoku and Number Soup. For older students check out a Sudoku or Conflict Graphing puzzle. Click the name of each puzzle to go to the link for the PDF download. Other downloads are multiplication charts in black and white or color with options for including numbers or using blank charts. The Arithmetic Worksheet Generator provides a large number for creating customized worksheets, be sure to read the instructions at the bottom of the page on how to change the type of problems and locations on the worksheet.

tag(s): sudoku (18), problem solving (407), logic (326), worksheets (89),

#### In the Classroom

Use the puzzles found on The Griddle as part of math centers, for homework, or as part of any logic and problem-solving unit. Create and differentiate worksheets using the Worksheet Generator.
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### Which One Doesn't Belong? - Mary Bourassa

5 to 12
1 Favorites 0  Comments
Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, and graphs. An additional link contains several incomplete puz... more
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Which One Doesn't Belong provides stimulating and challenging math puzzles. Select a category to find puzzles related to numbers, shapes, and graphs. An additional link contains several incomplete puzzles to finish. The site does not provide a "correct" answer. Each puzzle has multiple (possible) answers providing opportunities for all to choose and justify their response.

tag(s): problem solving (407), logic (326), puzzles (269), critical thinking (186),

#### In the Classroom

These puzzles are perfect for use with an interactive whiteboard or projector. Use the puzzles as a warm up for any math class or use for journal writing prompts. Use this site for discussion and debate with your gifted students. Challenge students to create puzzles and have classmates solve. Have cooperative learning groups create online books of their puzzles using a tool such as Bookemon, reviewed here. Have students create an annotated image including text boxes and related links using a tool such as Thinglink, reviewed here.

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### Problems of the Month - Inside Mathematics

K to 12
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The Problems of the Month offer problems (divided into 5 difficulty levels) to be used school-wide as part of a problem-solving theme. View videos to learn more about the program and get started in yo... more
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The Problems of the Month offer problems (divided into 5 difficulty levels) to be used school-wide as part of a problem-solving theme. View videos to learn more about the program and get started in your school. Expand the Getting Started link to find scoring guidelines, sample letters for teachers and parents, and more. Video examples demonstrate the use of different levels within each of the problems. Click on the "download problems of the month" link on the left side of the page to access problems by grade level.

tag(s): critical thinking (186), problem solving (407),

#### In the Classroom

Use this site to supplement your Common Core math teaching materials and problem-solving lessons. Share the site with staff members and use as a professional development resource throughout the school year. Share with parents during your math night or as part of your meet the teacher information. Although the site states for school-wide use, individual teachers can use problems in any classroom.
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### Hott Notes - Joel Riley

1 to 12
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Get Hott Notes to create sticky notes, lists, or scribbles, to keep on your home screen. Never again have your sticky notes get buried on your desk or lose their stick and fall off the wall! If you ha... more
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tag(s): note taking (65),

#### In the Classroom

A teacher's life is full of many things to remember. Keep sticky notes wherever you go on your computer desktop, in a folder, and on a USB mini-drive. Students love technology so encourage sticky note reminders. Use as a way to have students vote for choices. Allow students to add a sticky note to your computer after finishing an assignment. List all materials needed for lessons and labs on your sticky notes. Gather them from multiple places and still keep track. Use as a way to brainstorm with your class and later eliminate unneeded ideas. Keep weekly vocabulary or spelling words on Hott Notes for all of your student computers. Use as a method for tracking behavior.

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### P 21 - Partnership For 21st Century Skills - P21

1 to 12
3 Favorites 0  Comments

Join the community designed to educate students and all learners in 21st century learning. The mission consists of building collaborative partnerships between education, businesses, government, and co... more
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Join the community designed to educate students and all learners in 21st century learning. The mission consists of building collaborative partnerships between education, businesses, government, and community leaders to promote learning skills needed in the 21st century for life, work, and citizenship. P21 strives to prepare all students for the challenges of the future. Find a framework for student outcomes with support system outlines. Resources for educators include sample lesson ideas, Common Core alignment, P21 Common Core Tool Kit, professional development guides, 21st century skill maps in a variety of subject areas, case studies of exemplar schools, a newsletter, and a Blogazine. Resources for policymakers include information on definitions, framework, and implementing 21st century skills. A parents' guide contains information on 21st century skills and leadership. Most downloadable materials are free. Get a press kit or join an advocacy group or mailing list.
This site includes advertising.

tag(s): professional development (530),

#### In the Classroom

Investigate P21 to see if you are meeting your students' needs for the 21st century. Use the parent tip sheet, real world examples, or the PowerPoint to clarify your goals to parents and administration. Explore literacy maps and skills maps to compare your methods of instruction. Look for ways to support professional development in your school. Become more effective using Common Core Curriculum. Join the blog and change your world. This site contains great research, ideas, and goals to include in grants, mission statements, or strategic planning.
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### Math Arguments 180 - Curmudgeon

7 to 12
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Find interesting discussion topics for high school math classes at Math Arguments 180. This blog offers 180 days of ideas for discussion in math class. In fact, it has gone beyond 180 and is still cou... more
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Find interesting discussion topics for high school math classes at Math Arguments 180. This blog offers 180 days of ideas for discussion in math class. In fact, it has gone beyond 180 and is still counting. Scroll through by date to view topics or search the archives for past posts. Try clicking on the categories to find specific content such as geometry or probability. Find the most popular posts by viewing links on the right side of the home page.

tag(s): problem solving (407), logic (326), probability (180),

#### In the Classroom

Bookmark this blog or subscribe to it with your RSS feed reader to stay current with new posts. Use ideas in your math class as lesson starters, homework, or for extra credit. Have students create an annotated image explaining answers including text boxes and related links using a tool such as Thinglink, reviewed here. Challenge cooperative learning groups to create video explanations and share them on a site such as TeacherTube reviewed here.

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###### More

1 to 12
0 Favorites 0  Comments
Need practice worksheets or new teaching techniques? Go to Dads! Find printable flashcards, fact family math with timed tests, place value, decimals, fractions, patterns, negative numbers, word proble... more
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Need practice worksheets or new teaching techniques? Go to Dads! Find printable flashcards, fact family math with timed tests, place value, decimals, fractions, patterns, negative numbers, word problems, order of operations, geometry, time, measurement, rounding, and metrics. Find several versions for multiple opportunities for practice. Included is an online timer. Join the newsletter to view the latest new additions.
This site includes advertising.

tag(s): worksheets (89), measurement (240), order of operations (53), subtraction (249), addition (307), fractions (335),

#### In the Classroom

Need extra practice sheets for some students? Need materials for enrichment? Getting ready for a math night? Find free materials at your fingertips! Keep this page as part of your class web page for additional practice on all math topics. Start an after school math club for enrichment or reinforcement. Let kids "play school" with the many worksheets offered here.
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### Oh nO - Martin Kool

3 to 12
5 Favorites 0  Comments
Oh nO is a unique logic puzzle game that is available on your web browser or as an app (on any device). Use the blue dots with numbers to decide where to place red or blue dots on the grid. The number... more
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Oh nO is a unique logic puzzle game that is available on your web browser or as an app (on any device). Use the blue dots with numbers to decide where to place red or blue dots on the grid. The numbers on the blue dots indicate how many other blue dots surround each. Click once to make the circle blue and twice to make the circle red. Select different size grids and use the timer to increase difficulty. Follow the introduction on the site to learn more details about this mind challenge!

tag(s): DAT device agnostic tool (248), logic (326), problem solving (407), puzzles (269),

#### In the Classroom

Oh nO is perfect for use on your interactive whiteboard, projector, or on individual computers. Introduce this game to students and then challenge them to move up in difficulty levels and speed up completion times. Use this site to challenge your gifted students. Share on your class web page or blog for students and parents to play together at home. Set up a station at your school's math fair for participants to try their hand at Oh nO.

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### 0h h1 - Martin Kool

3 to 12
9 Favorites 0  Comments
Oh h1 is an addicting and challenging interactive for problem solving and logic. Choose from four different grid sizes to play. Click on squares to make them red or blue. The goal is to never have mor... more
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Oh h1 is an addicting and challenging interactive for problem solving and logic. Choose from four different grid sizes to play. Click on squares to make them red or blue. The goal is to never have more than 2 squares of the same color in a row, and to have equal numbers of colors in all rows and columns. The rules are explained as you play. Increase difficulty by increasing the number of grids and completing in the shortest elapsed time.

tag(s): DAT device agnostic tool (248), puzzles (269), logic (326), problem solving (407), game based learning (255),

#### In the Classroom

Oh h1 is perfect for use on your interactive whiteboard or projector. Use this site as a computer learning center or on individual computers. Challenge students to increase difficulty levels and elapsed time. Share this engaging site with your gifted students for some mind stretching fun! Be sure to include a link on your class website or blog (parents may want to try this one too). Have students challenge their parents to see who can complete puzzles the quickest!

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