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 ...

Research Clips and Briefs provide a foundation for taking what the research says about mathematics teaching and learning to teachers, administrators, school boards and parents. Email research@nctm.org ...

Use this interactive tool to create dynamic drawings on isometric dot paper. Draw figures using edges, faces, or cubes. You can shift, rotate, color, decompose, and view in 2‑D or 3‑D. Start by ...

Artificial Intelligence (AI)-driven tools can respond to students’ thinking and interests in ways that previous tools could not. By drawing from large language sets, AI has the potential to adjust ...

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, ...

NCTM and The Hunt Institute have produced a series of videos to enhance understanding of the mathematics that students need to succeed in college, life, and careers. Beginning in the primary grades, ...

The Product Game is a fun, interactive game that exercises your skill with factors and multiples. This Product Game Investigation was adapted with permission and guidance from Prime Time: Factors and ...

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 ...

Thank you to all who attended the NCTM 2022 Regional Conference & Exposition in Baltimore! A special thanks to our program committee, volunteers, speakers, and exhibitors who helped make this event a ...

This tool allows you to learn about various geometric solids and their properties. You can manipulate and color each shape to explore the number of faces, edges, and vertices, and you can also use ...

Verified proof of full vaccination or negative PCR COVID-19 test taken within 72 hours of entry to the event and provided no later than 24 hours before entry to the event is required. This will be ...

What will 2022 bring us with regard to teaching and learning mathematics, and what will we bring to 2022? Although I usually do not make New Year’s resolutions, I do think this is a great time for us ...