This application is used to explore the number of chairs needed when tables are rearranged in a restaurant.

This activity illustrates the Triangle Inequality and the conditions necessary for a triangle to be formed from three straight lines.

This tool can be used to create a histogram for analyzing the distribution of a data set using data that you enter or using pre-loaded data that you select.

This tool allows you to explore fractions, decimals and percents by creating fractions with denominators up to 100.

Crack the code and can determine the cost of your name. Use this activity to practice solving systems of equations.

This applet explores the use of an abacus model for representing numbers and for performing addition.

Play a matching game with different representations of equivalent items.

This interactive demonstrates why (a + b)2 = a2 +2ab + b2.

The four games that can be played with this applet help to develop counting and addition skills.

Use this tool to create a spinner to examine experimental and theoretical outcomes.

Why are airport runways numbered? The math challenge is to figure out the missing runway number.

Site A! Site B! How alike are we? Using the information from the chart, which two dig sites seem to be most alike?

Does he have a chance? In this math challenge, estimate Helix's chances of winning the bowling tournament.

How far can you fly a paper airplane? Math challenge provides practice in comparing quantities.

How do I cover thee? Let me count the ways. The challenge is to figure out in how many ways can the Tatami mats be arranged to cover the floor.

Is the Statue of Liberty's nose too long? Challenge is to figure out the length of the Statue of Liberty's nose by knowing the length of her arm.

Use the information from the U.S. Census to determine if women will ever earn as much money as men.

Math activity challenges you to figure out how fast an Arctic tern can fly around the world. How long would it take to fly from the Arctic to the Antarctic and back?

Make a table to figure out if a baseball valued at $3000 in 1927 is worth more than a baseball valued at $3 million in 1999. Which is a better investment?

Math activity challenges you to determine how many different ways there are to get to your destination.

How do you print a ribbon on a box? The challenge is to figure out which of the patterns can be folded into a box with an orange ribbon printed all the way around it?

This Math Forum resource poses a weekly problem to students. If desired, students may submit their answers. Solutions are published the next week.

This site gives a general description of one of Euler's contributions, topology. It also presents one of the more famous problems of mathematics, The Bridges of Konigsberg.

Dr. Math, in a reply to a student question, mentions how you can construct an ellipse using string and thumbtacks.