National Council of Teachers of Mathematics
The Math Forum: Math World Interactive
MathWorld Interactive "Is a FREE project where students in grades 6 to 8 from around the world work on open-ended problems." Go to the Frequently Asked Questions section for an easy introduction.
Scholastic
Scholastic: Max's Math Adventures: Subtraction Square Dance
This site has a square dance rhyme with some fun subtraction practice. Teachers will appreciate the activity page, the extra challenges, and the teacher's guide for easy lesson planning.
University of Cambridge
University of Cambridge: Nrich: Put Out the Flags
Sharpen your logic and percent skills while working on this challenge. A strategy for solving the problem and the solution are available from links on the left.
University of Cambridge
University of Cambridge: Maths and Sports: The Olympic Torch Tour
Can you find the best route for the Olympic Torch relay to take? This more challenging activity is designed to be accessible to GCSE maths students (grades 8, 9, and 10).
Fun Brain
Fun Brain: Power Football (Decimal Game)
Four levels of play, from easy to super brain, challenge students to add, subtract, multiply, and divide decimals. Get three correct answers in a row and score a field goal.
ClassFlow
Class Flow: Strategies to Meet Challenges
[Free Registration/Login Required] Challenge is another word for problem solving. In this flipchart students are given the four strategies for problem solving: Explore, plan, solve and reflect.
University of Cambridge
University of Cambridge: Nrich: Scoring With Dice
On this one page website sharpen your logic, multiplication, and multiples skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Divide It Out!
On this one page website sharpen your logic and basic division fact skills while working on this challenge. The solution is available to double check your solution.
University of Waterloo (Canada)
University of Waterloo: Cemc: Math Circles: Exponents [Pdf]
This worksheet provides exercises in writing expressions in exponential form, multiplying and dividing powers, and working with zero and negative exponents. A series of challenging word problems are included.
Other
Roots of Action: How Kids Learn to Take Initiative and Overcome Challenges
Learning to take initiative is a behavior that helps kids navigate their lives with courage and optimism. This article provides insights into how children learn to take initiative. Parents and teachers are key mentors in the process. A...
Mensa Espana
Mensa: Juegos De Ingenio Del Club Mensa (001 005)
Challenge yourself with these five math problems. Each problem is marked by their levels of difficulty.
Mensa Espana
Mensa: Juegos De Ingenio Del Club Mensa (011 015)
Challenge yourself with these five math problems. Each problem is marked according to their levels of difficulty.
Mensa Espana
Mensa: Juegos De Ingenio Del Club Mensa (016 020)
Challenge yourself with these five math problems. Each problem is marked according to their levels of difficulty.
Mensa Espana
Mensa: Juegos De Ingenio Del Club Mensa (006 010)
Challenge yourself with these five math problems. Each problem is marked according to their levels of difficulty.
Mensa Espana
Mensa: Juegos De Ingenio Del Club Mensa (021 025)
Challenge yourself with these five math problems. Each problem is marked according to their levels of difficulty.
Other
Colorado College: A Brief History of the Civil Rights Act of 1964
A very good explanation of the problems and political machinations that happened behind the scenes in both the House of Representatives and Senate as the wording of the Civil Rights Act of 1964 was developed. See how the legislation was...
University of Georgia
University of Georgia: Inter Math: Interactive Math Dictionary
Each term of Intermath's interactive math dictionary contains a description and links to related terms, everyday examples, interactive checkpoint, more information, and challenges located in the left-hand column of the page. This...
University of Cambridge
University of Cambridge: Nrich: Make 37
Sharpen your logic and addition skills while working on this challenge. Solution.
National Council of Teachers of Mathematics
Nctm: Figure This: Wheel of Fortune's Frequent Letters
Did you know that letter guessing on Wheel of Fortune is based on probability? In this challenge taken from one of TV's most popular game shows, discover what consonant or vowel should be guessed next based on letters already given. A...
PBS
Pbs: Modeling Fraction Division Using Comparison, Group Number Unknown
This animated video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to use fractions to compare the spring weight of a hedgehog with its weight just before hibernation....
PBS
Pbs: Modeling Fraction Division Using Comparison, Group Size Unknown
This video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to determine the length of a losing frog's jump in a jumping frog contest based on a comparison with the...
PBS
Pbs: Modeling Fraction Division Using Arrays
This video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to determine the width of a rectangular platypus burrow based on its length and area. In the accompanying...
National Council of Teachers of Mathematics
The Math Forum: Calculation Tips & Tricks: Multiplication Tips
Find tips for multiplying by 5, 9, and 11, and learn how to solve math problems without a calculator. This site includes explanations and examples for gifted children and teachers wanting to challenge their students.
Discovering Egypt
Discovering Ancient Egypt: Egyptian Mathematics Numbers Hieroglyphs
Challenge yourself and see if you can solve these math problems using Egyptian hieroglyphics. Egyptians excelled in mathematics and this lesson will help you understand hieroglyphic numbers. A podcast is included that explains the Rhind...