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

### Math.com - Leap of Faith Financial Services, Inc

5 to 12
This site offers many opportunities for math exploration for both teachers and students. Although they have a store and ads on the site, much of the site is free and ...more
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This site offers many opportunities for math exploration for both teachers and students. Although they have a store and ads on the site, much of the site is free and worth a visit. One especially helpful portion of the site is the link to different types of calculators from basic to graphing to mortgage and loan calculators. Students and parents will find the homework section of the site helpful as it is categorized by different topics, then each topic is further divided into sections. For example, under fractions you will find definitions, reducing, adding and subtracting, multiplying and dividing. In each of those portions there is a section with a first glance (overview), in-depth, examples, and workout. There is also a unit quiz for each section. Another helpful area of the site is the practice section which offers practice in many different math skills such as square root, percent, and integers. The games section offers practice with critical thinking skills through logic puzzles and games such as chess.

tag(s): calculators (39), fractions (229), integers (40), percent (81), test prep (97)

#### In the Classroom

Create a link to this site on your classroom website or blog to share with students and parents as a resource at home. Display portions of the site on your interactive whiteboard or projector when introducing a unit or lesson or when reviewing at the end of a unit. Use the calculators on your interactive whiteboard during whole class lessons.

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### Baseball-Reference

6 to 12

This site is perfect to practice math skills using real-time information and statistics from the American and National Leagues. A vast amount of data is available including prices of...more
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This site is perfect to practice math skills using real-time information and statistics from the American and National Leagues. A vast amount of data is available including prices of recent transactions, team and player statistics, streaks, and more. Considerable data is included for All-Star games, postseason stats, and frivolities such as birthdays and birthplaces. Information is also included for minor league teams. Be sure to check out the tutorial videos that help users with the site. Videos include information on box scores and their features, player and team gamelogs, and a 17 minute video reviewing features and layout of the baseball-reference site.

tag(s): charts and graphs (199), data (162), probability (141), statistics (128)

#### In the Classroom

Watch the information video on the website on your interactive whiteboard (or projector) as an introduction to the site. Allow students time to explore the site on their own or with a partner. This site is perfect for students to practice working with statistics and graphing. Have students choose a player or team and graph statistics, then compare these statistics with other students' data. Challenge students to research statistics on the site to find unusual information and research what may have happened. Have students create a multimedia presentation to share with the class such as a simple online posters using PicLits (reviewed here). Or compare data from students' favorite teams and create a class graph.

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### KenKen Puzzles - New York Times

3 to 12
KenKen is a puzzle game similar to Soduku with the added twist that numbers in dark-outlined areas must combine to produce the target number indicated. Read the fully illustrated tutorial...more
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KenKen is a puzzle game similar to Soduku with the added twist that numbers in dark-outlined areas must combine to produce the target number indicated. Read the fully illustrated tutorial for more information. Each day the New York Times provides 6 new puzzles in 3 different skill levels. This is a great activity for practicing math operations and also developing problem solving and critical thinking skills.

tag(s): logic (249), problem solving (299), puzzles (205)

#### In the Classroom

Create a link to the site for students to use at computer centers or the computer lab. Print out puzzles and allow students to work with a partner to solve during center time. Challenge students to complete puzzles at different skills levels. Share a puzzle on the interactive whiteboard as students are entering the classroom and complete the puzzle together.

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### The Fruit Game - 20/20 Technologies

3 to 12

In this activity, you take turns removing fruit from the table, in accordance with the rules. Whoever takes the last fruit from the table is the winner. This is a ...more
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In this activity, you take turns removing fruit from the table, in accordance with the rules. Whoever takes the last fruit from the table is the winner. This is a one player game - you versus the computer. Although it is deceptively easy, it is enjoyable to plan a winning strategy based on the different amount of fruit presented for each game. Rules are included as an overview before playing.

tag(s): critical thinking (120), logic (249), probability (141), problem solving (299), puzzles (205)

#### In the Classroom

This challenge is perfect for the interactive whiteboard or projector. Demonstrate how to use the site and then allow students to challenge the computer to see if they can win. Use this site as a problem solving center and have students journal about different strategies for winning the game.

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### Jokes for Math Teachers - Clem Falbo

4 to 12
What did one math book say to the other? Don't bother me I've got my own problems! Are you looking for more bad jokes like this for your math class or ...more
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What did one math book say to the other? Don't bother me I've got my own problems! Are you looking for more bad jokes like this for your math class or perhaps a staff presentation? This site is for you! Choose from over 40 math jokes listed on this site, or send in your own. Who says math teachers can't be funny?

tag(s): riddles (16)

#### In the Classroom

Share a joke a day with your classroom or encourage them to create their own jokes. Use a joke to introduce a new topic and explore what makes it funny. Share a joke a week on your class website or blog and encourage readers to add their own joke or spin on the joke. Add an entire math joke section to your class wiki and give extra credit to promote a multiple intelligence approach to math.

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### The Math Website - The Math Website

8 to 12
This site contains many resources for Jr. High and High School Mathematics teachers. It is divided into sections such as Puzzles, Activities, Diversions, Numbers, Gadgets, and more....more
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This site contains many resources for Jr. High and High School Mathematics teachers. It is divided into sections such as Puzzles, Activities, Diversions, Numbers, Gadgets, and more. After choosing a section, there is an itemized list on the left-hand side of the page to choose a specific topic or activity. For example, under Math Topics, choices range from Arithmetic Basics (adding 2-digit numbers) through Trigonometry and Trig Graphing. After choosing a topic: lessons, study, quiz, and test activities are provided. Be sure to check out the Diversions section that includes humor, poems, riddles, and more.

tag(s): charts and graphs (199), puzzles (205)

#### In the Classroom

Introduce the site on your interactive whiteboard or projector and allow students to explore on their own. Share a link on your class website or blog for students to use at home. Assign specific portions to students struggling with math concepts to use as practice. Assign problems on the Enrichment page for extra credit or as a problem of the week.

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### Number Gossip - Tanya Khovanova

5 to 12
Are you looking to have some fun with numbers or a quick class-starter? This site may be for you! Enter a number and find out all you wanted to know ...more
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Are you looking to have some fun with numbers or a quick class-starter? This site may be for you! Enter a number and find out all you wanted to know but were afraid to ask. For example, enter 9 and you will find out that 9 is the only number (except one) which is equal to the sum of the digits of its square and that 9 is the smallest odd composite number. Below the list of information are common properties of the number entered. Some numbers also include links to web pages about that number - for example, enter the number 6 and there is a link to Some Thoughts on Number 6 by John Baez.

tag(s): data (162), numbers (196), puzzles (205)

#### In the Classroom

Display the page on your interactive whiteboard or projector at the beginning of the class to spur math discussion. Choose some interesting information on numbers to use for a Fact of the Day or Interesting Information of the Week for students. Create a bulletin board displaying interesting facts about numbers for your classroom.

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### WorksheetWorks - WorksheetWorks.com

K to 12
The goal of this site is to provide the finest quality paper-based teaching materials to teachers and parents around the world. Myriads of options are available to create worksheets...more
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The goal of this site is to provide the finest quality paper-based teaching materials to teachers and parents around the world. Myriads of options are available to create worksheets in Math, English, Geography, Puzzles, and Miscellaneous. Just choose a subject, then a topic, and choose from options offered to create your own worksheet that can be printed in pdf form. This allows the worksheet to be shown clearly on interactive whiteboards eliminating the need to print each creation. Although it was created for teachers, a more useful purpose may be for students to create their own worksheets to share with other students or for self-practice.

tag(s): printables (39), puzzles (205), worksheets (64)

#### In the Classroom

Use this site to differentiate for students of all levels by allowing students to create their own worksheet for practice or review. Make a shortcut to this site on classroom computers and use it as a center - students can then create their own individualized practice.

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###### More

4 to 10
This ativity provides positive reinforcement of correct math answers with a basketball player taking a shot at the basket. Click Start or any of the questions in the Table of ...more
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This ativity provides positive reinforcement of correct math answers with a basketball player taking a shot at the basket. Click Start or any of the questions in the Table of Contents left of your window to see a mathematics question and animation. If you answer the question correctly, the result will be a basketball shot animation; incorrect responses yield the correct answer. Questions include various strands and levels of mathematics such as rounding numbers, perimeter, word problems, common factors, and much more. At the completion of each round, the score appears with the number of correct responses and percentage correct. You must either click the back button (if you want to remain within the same topic) or click on a new topic to move on to the next question. The game is available in Spanish.

tag(s): charts and graphs (199), decimals (124), exponents (43), factors (40), fluency (24), map skills (80), number sense (96), operations (122), perimeter (31), problem solving (299), rounding (19)

#### In the Classroom

Introduce this site on your interactive whiteboard or projector. Then have students explore this site independently or in small groups. Create a class graph of scores, and challenge students to increase their percentage of correct problems. Share as a Favorite on your TeachersFirst public page or on your class website or blog for students to access the site outside of class.

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### Brain Teasers - Pedago.net

4 to 12
This simple site offers hundreds of brain teaser problems along with answers. Categories include friends, math, logic, optical illusions, puzzles, and more. Some topics are NOT suitable...more
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This simple site offers hundreds of brain teaser problems along with answers. Categories include friends, math, logic, optical illusions, puzzles, and more. Some topics are NOT suitable for the classroom (such as dating.) Each brain teaser is fairly short and includes a link to click on the answer.

tag(s): logic (249), optical illusions (13), problem solving (299), puzzles (205)

#### In the Classroom

Choose a problem to use for a problem of the day or problem of the week in your classroom. Students can explain the problem solving process in math journals. Use several problems in a math problem-solving center. Copy several problems and have students store them in math folders to complete when finished with other work.

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### Angles - Shodor

6 to 12

This site provides practice with vocabulary associated with angles. Common Core State Standards are addressed for fourth and seventh grades and geometry. The site is also appropriate...more
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This site provides practice with vocabulary associated with angles. Common Core State Standards are addressed for fourth and seventh grades and geometry. The site is also appropriate for younger grades to use when learning and processing information about angles. The learner section has detailed explanations about different types of angles that can be used as a review when working with angles. The instructor area has correlations to standards, classroom information, links to similar resources, and a downloadable exploration questions sheet. The activity allows options of one or two transverals and scoring can be used or turned off.

tag(s): angles (89), geometric shapes (173)

#### In the Classroom

Introduce this site with your interactive whiteboard or projector. Then have students explore this site independently or in small groups to complete the exploration questions. Use this site as an anticipatory set or "activator" to introduce a unit or lesson about angles on a projector or interactive whiteboard. Create a link to the site on your classroom webpage or blog for students to practice at home.

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### Number Base Clock - Shodor

3 to 12

This site provides practice in converting from base 10 to other values up to base 16. Three clocks are displayed and options are provided for choosing the value used on ...more
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This site provides practice in converting from base 10 to other values up to base 16. Three clocks are displayed and options are provided for choosing the value used on the clocks. Upon entering the choice, the hands on the clock turn to show the appropriate representation in the chosen base. The learner section provides information on base number systems and how they have been used in the past. The instructor section provides links to standards, place value in the curriculum, possible issues that may arise in the classroom and links to additional resources including an activity sheet.

tag(s): base ten (11), number sense (96)

#### In the Classroom

Provide students with the exploration questions and let them work with a partner to solve. Display the site on the interactive whiteboard or projector as a springboard to introduction of bases other than the base 10 system. Use when studying Ancient Mayans to demonstrate their counting system that used base 20.

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### Positive Linear Function Machine - Shodor

6 to 12

This site provides great practice with linear functions in the format of y=m*x+b. Integers between 0 and 10 are available for use. The activity can be used with or without ...more
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This site provides great practice with linear functions in the format of y=m*x+b. Integers between 0 and 10 are available for use. The activity can be used with or without scoring. The learner section provides a detailed explanation and examples on how to use the function machine. The instructor sections includes information on how to use the site in the classroom, links to standards and related resources. Be sure to check out the downloadable exploration questions that can be used in the classroom.

tag(s): functions (69), logic (249), patterns (87), problem solving (299)

#### In the Classroom

Demonstrate the site on your interactive whiteboard or projector by introducing the learner section and discussing examples included. Provide students with a copy of the explorations questions to complete on their own or with a partner. Provide a link on classroom computers to use as a classroom center. Provide a link on your classroom website or blog for students to practice at home.

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### Linear Function Machine - Shodor

6 to 12

Explore simple linear functions with this activity. The function is always a simple line of y=(m*x)+b, any integers from -10 to 10 can be inputted. You can practice algebra skills,...more
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Explore simple linear functions with this activity. The function is always a simple line of y=(m*x)+b, any integers from -10 to 10 can be inputted. You can practice algebra skills, pattern finding, arithmetic skills, and exploring the function of variables. The instructor tab also includes standards addressed, possible issues that may come up in class discussion, and links to similar resources.

tag(s): equations (152), functions (69), patterns (87), variables (20)

#### In the Classroom

Display on the interactive whiteboard or projector when introducing linear functions. Explore different variables with the class and problem solving strategies to use when working with linear functions. Create a link on your classroom computer and allow students to work in pairs to create functions and predict outputs.

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### BrainBashers - Kevin Stone

3 to 12
BrainBashers offers many different types of puzzles, riddles, brain teasers, and optical illusions. The site is updated daily so new material is always readily available. Each time...more
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BrainBashers offers many different types of puzzles, riddles, brain teasers, and optical illusions. The site is updated daily so new material is always readily available. Each time you open the site, find a new fun fact along with an odd word and its definition. The site is organized into puzzles, games, illusions, fun stuff, and logic games. Sudoku puzzles of different difficulty levels are also available. The link for teachers includes puzzles for schools and useful pages including optical illusions, memory tests, and logic puzzles.

tag(s): logic (249), problem solving (299), puzzles (205), riddles (16)

#### In the Classroom

Use the odd words daily for students to learn new vocabulary. Share the fun fact on your interactive whiteboard or projector as a class discussion starter. Print and share Sudoku and other puzzles as challenge activities. Use logic puzzles in class for practice with problem solving skills. Share the site on your classroom website or blog for students to access at home.

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### The Enigma Device

6 to 12
Here's a puzzle to challenge even the most adept word workers. This daily puzzle from WordZap lets players unscramble a phrase using letter substitution. It sounds simple, but the process...more
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Here's a puzzle to challenge even the most adept word workers. This daily puzzle from WordZap lets players unscramble a phrase using letter substitution. It sounds simple, but the process is more complex than one might imagine. This is a great site to challenge "out of the box" thinkers.

tag(s): puzzles (205)

#### In the Classroom

Be sure to include this site on your teacher web page for students to access outside of class for a daily challenge. Also consider sharing this site with your teaching colleagues who work with your gifted students.

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### Math Machines - Robert Chaney

8 to 12

If you are looking for ideas to incorporate mathematical problem solving with fun, hands-on activities this site is for you! Well over 20 activities are offered covering Algebra, Trigonometry,...more
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If you are looking for ideas to incorporate mathematical problem solving with fun, hands-on activities this site is for you! Well over 20 activities are offered covering Algebra, Trigonometry, Science/Physics, General Math, and Technology concepts. Choose a category, then select the activity and view all the materials offered. Titles include Color Sines, Right Triangle SAM, and Binary Signals. Each activity includes facilitator notes including 11 items from overview, setup, discussion questions, and troubleshooting. Most also include participant handouts in MS Word format and software needed for calculator programs.

tag(s): angles (89), critical thinking (120), electricity (93), light (54), logic (249), magnetism (39), stars (68)

#### In the Classroom

Share this site with students and preview each of the activities, then allow students to choose an activity for a math project. Several activities on the site are perfect for use as cross-curricular projects with the Science or Technology departments. Use this site as a resource for math or technology fairs. This site is perfect to use as a resource with gifted students - allow them to choose a project that coincides with their interests.

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### Free Technology Toolkit for UDL in All Classrooms - Karen Janowski

K to 12

Free Technology Toolkit for UDL in All Classrooms is the reference tool that gives you all the necessary free websites to promote learning for all students. UDL, or Universal Design...more
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Free Technology Toolkit for UDL in All Classrooms is the reference tool that gives you all the necessary free websites to promote learning for all students. UDL, or Universal Design for Learning, is a concept promoting learning for all learners using assistive technology to promote motivated, strategic, flexible, lifelong learners. UDL reduces barriers and offers support and challenge for each individual learner. Create a free account to make your own wiki or to join in another wiki. Some available resources are free text-to-speech, graphic organizers, multimedia and digital storytelling, study skills tools, literacy tools, writing tools, collaborative tools, research tools, math tools, and tools that compensate for handwriting issues.

tag(s): differentiation (45), graphic organizers (42), literacy (106)

#### In the Classroom

Refer to this site when you have a struggling learner who needs more support or the student who needs a challenge. Dig through these sites to use in your classroom. Go down the list and incorporate two a week. Many are also reviewed in more detail on TeachersFirst, so don't forget to search for our in-depth reviews to learn more. Ask your student technology crew to investigate and find their favorite from a list of three sites. Add to your class website as a reference. Use this site at Back to School Night to help parents jump into educational technology! Add more to the list! This only opens the doors to technology.

Deborah, LA, Grades: 0 - 12

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### Summer Sparklers - TeachersFirst

K to 12
This collection of editors' choices from TeachersFirst will spark summer excitement for parents and kids alike. Whether your want to create something, ignite new learning, or hold on...more
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This collection of editors' choices from TeachersFirst will spark summer excitement for parents and kids alike. Whether your want to create something, ignite new learning, or hold on to what you already know, you will savor these safe, reviewer-recommended resources. Be sure to share with your friends, neighbors, and family. Teachers will want to share this page with students departing for summer break. Summer will never be "boring" again!

tag(s): enrichment (12), summer (10)

#### In the Classroom

Share the link to this special collection via your class web page, newsletter, or email to all your students as they depart for vacation. You will help parents and students alike. Avoid the "summer slide."

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### World Maths Day - Mathletics

K to 12
This site offers all information on World Maths Day, usually held in March. World Maths Day has taken place each year since 2007. They plan to add science challenges. Students ...more
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This site offers all information on World Maths Day, usually held in March. World Maths Day has taken place each year since 2007. They plan to add science challenges. Students play at home and at school against other students around the world in live games of mental arithmetic. Each game lasts for 60 seconds and students can play up to 100 games, earning points for their personal tally. The students who answer the most questions correctly appear on the Hall of Fame. There are 5 different levels of play, 20 games on each level. All participants receive a digital certificate of achievement. Site resources include teacher and student quick launches, technical guides, and printable posters for the classroom.

tag(s): competitions (13), puzzles (205)

#### In the Classroom

Enroll your classroom and enjoy a fun Math Day by allowing students to participate in the Math games for a portion of their class time. Introduce the site on your interactive whiteboard, enroll your class and encourage them to participate from home for extra credit. Challenge other classes in your school to participate, record scores, and have a friendly competition for World Maths Day. Incorporate a PTO/PTA evening for family involvement.