National Council of Teachers of Mathematics6d
2025 Kansas City Spring Conference Highlights
Thank you to all who attended the NCTM 2025 Spring Conference in Kansas City! A special thanks to our program committee, ...
National Council of Teachers of Mathematics20h
Factor Game
The Factor Game applet was adapted with permission and guidance from "Prime Time: Factors and Multiples," Connected Mathematics Project, G. Lappan, J. Fey, W ...
National Council of Teachers of Mathematics5d
Select Common Core
Building Sets of 13 and 14 Lesson PreK to 2nd Building Sets of 15 and 16 Lesson PreK to 2nd Building Sets of 17 and 18 Lesson PreK to 2nd Building Sets of 19 and 20 Lesson PreK to 2nd Building Sets of ...
National Council of Teachers of Mathematics4d
Lessons and Legacies
Did you know that for over 2,000 years people believed that no proof could be developed for the Pythagorean Theorem using trigonometry? In his book The Pythagorean Proposition (1968), mathematician ...