Do you know how long it takes your heart to beat 100 …

Do you know how long it takes your heart to beat 100 times? Test your estimation and number sense skills with this problem-solving challenge. A one-page activity taken from the NCTM Math Challenges for Families Collection. Hints and real-world applications included.

If you like tackling formulas, then this math challenge is for you. …

If you like tackling formulas, then this math challenge is for you. See if you can calculate Helix's BMI (body mass index) and find out if his health is at risk. A one page NCTM Math Challenges for Families activity that engages learners in real-world skills.

Try this real world challenge that focuses on data collection, data analysis, …

Try this real world challenge that focuses on data collection, data analysis, and problem solving with information from the U.S. Census Bureau. Discover how these skills are applied in real life situations in this one page activity from the NCTM Math Challenges for Families series.

Use this site to figure out if women really do live longer …

Use this site to figure out if women really do live longer than men. A math challenge taken from today's health journals that explores data collection, data analysis, patterns, and graphing skills. Learn how mastering these skills can be useful in real life situations in this one page activity from the NCTM Math Challenges for Families series.

Use your algebraic reasoning to solve this math challenge that explores the …

Use your algebraic reasoning to solve this math challenge that explores the relationship between quantities and weights. Try this math challenge from the NCTM Math Challenges for Families series. Also, discover how mastering this skill would useful in real life situations.

Take the math challenge. Can you figure out how long you have …

Take the math challenge. Can you figure out how long you have to wait in line to buy a ticket? An estimation and time measurement challenge from the NCTM Math Challenges for Families collection. Based on real-world themes and application. Hints are included, if you need them.

Students, teachers, and parents alike will enjoy this challenging math site. It …

Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish version is available.

Try this probability challenge from the NCTM Math Challenges for Families series. …

Try this probability challenge from the NCTM Math Challenges for Families series. See if you can figure out the probability of putting three checks in the correct envelopes without looking. Also, discover how probability skills are used in real life situations.

Can you break the magic number code? Test your algebra aptitude in …

Can you break the magic number code? Test your algebra aptitude in this challenge that explores number generalizations, symbols, and equations. Discover how algebraic procedures are used in everyday situations in this one page activity from the NCTM Math Challenges for Families series.

If you're superstitious you may want to try this math challenge. Test …

If you're superstitious you may want to try this math challenge. Test your reasoning and number sense skills by finding out if there is a Friday the 13th every year. Discover how understanding number patterns and reasoning can be helpful in real life situations. This is just one of the activities from the NCTM Math Challenges for Families series.

This resource presents an interesting challenge for the serious mathematician with strong …

This resource presents an interesting challenge for the serious mathematician with strong reasoning skills. Explore proportional reasoning, probabilities, fractions, and ratios in this challenge to figure out if you always get six hours of recording on a 120 minute video tape. A one page activity from the NCTM Math Challenges for Families collection that connects this skill to real world applications.

This resource is about factoring linear and quadratic expressions in one variable, …

This resource is about factoring linear and quadratic expressions in one variable, evaluating them at a given value of the variable, multiplying factors to find the expanded form of the expression, and solving linear and quadratic equations.

Use this interactive tool to learn how to find the area of …

Use this interactive tool to learn how to find the area of a rectangle. Click on "Instructions" for details on how to use this tool. Click on "Explore" for more ideas.

"The volume of a cube can be developed by considering unit cubes, …

"The volume of a cube can be developed by considering unit cubes, a single row (longs) of unit cubes or a single layer (flats) of cubes using this applet." This easy software makes it possible to easily construct a cube and take it apart. [Requires Java.]

This resource investigates the concept of factors by creating rectangular arrays. The …

This resource investigates the concept of factors by creating rectangular arrays. The interactive tool allows learners to relate area to multiplication.

An interactive game to learn fractions less than one, greater than or …

An interactive game to learn fractions less than one, greater than or equal to 1, which are written as mixed numbers and their equivalent decimal and percentage forms

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