Use tiles to represent variables and constants, learn how to represent and solve algebra problem. Solve equations, substitute in variable expressions, and expand and factor. Flip tiles, remove zero ...

Change the number of sectors and increase or decrease their size to create any type of spinner. Then, conduct a probability experiment by spinning the spinner many times. How does the experimental ...

This applet allows the user to investigate the mean, median, and box-and-whisker plot for a set of data that they create.

NCTM established the Mathematics Education Trust (MET) in 1976 to channel the generosity of donors by creating grants for preservice teachers, in-service teachers, coaches, teacher-leaders, teacher ...

Connect with leading professionals and peers from across the nation and keep up-to-date with current education topics and practices. Send teams of teachers and save on registration! NCTM's official ...

Okta challenges you to a duel! That crazy octopus wants to play you in a game where the first person to choose cards with a specified sum wins. You can choose how many cards, what types of numbers, ...

A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can ...

We recognize as valid and legitimate the role of public opinion in the determination of educational goals. But this philosophy is predicated on a well-informed public. Thus, the National Council of ...

Highlights from the NCTM 2025 Virtual Conference! Thank you to all who attended the 2025 Virtual Conference! A special thanks to our program committee and speakers who helped make this event a success ...

The National Council of Supervisors of Mathematics (NCSM) and the National Council of Teachers of Mathematics (NCTM) recognize the importance of addressing STEM fields (science, technology, ...

The mathematics of kolam, a traditional art form of southern India. Article discusses simple graph theory, Euler paths and circuits, numerical patterns, symmetry, and growing patterns. Includes ...

Procedural fluency is an essential component of equitable teaching and is necessary to developing mathematical proficiency and mathematical agency. Each and every student must have access to teaching ...