National Council of Teachers of Mathematics

Ability Labels: Disrupting “High,” “Medium,” and “Low” in Mathematics Education

Question: Why is labeling students “high,” “medium,” and “low” problematic?
National Council of Teachers of Mathematics

Tennessee Mathematics Teachers' Association 2025 Annual Conference

Tennessee Mathematics Teachers' Association 2025 Annual Conference<br />Pellissippi State Community College, Knoxville, TN<br />9/25/2025 2:00:00 PM<br /><p>Human ...
National Council of Teachers of Mathematics

Area of Parallelograms

In the diagram below, the blue line is parallel to the base of the parallelogram. When you slide C back and forth along the blue line, how do the base (AB), height (DE), and area change? Before using ...
National Council of Teachers of Mathematics

New! Notice and Wonder Pins at the 2025 Annual Meeting

Introducing the NEW Notice & Wonder enamel pins, debuting at the 2025 NCTM Annual Meeting & Exposition! This year kicks off a collectible pin series designed just for NCTM attendees. Each meeting will ...
National Council of Teachers of Mathematics

Members-Only Access

Founded in 1920, the National Council of Teachers of Mathematics (NCTM) is the world's largest mathematics education organization throughout the United States and Canada.