This applet allows students to individually practice working with relationships among fractions and ways of combining fractions. For a two person version of this applet see the Fraction Track ...
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 ...
Investigate congruence by manipulating the parts (sides and angles) of a triangle. If you can create two different triangles with the same parts, then those parts do not prove congruence. Can you ...
Attending conferences and networking with fellow educators is one of my favorite things to do! Last month, I had lots of opportunities to network with attendees at the NCTM Spring Conference in ...
Look for and express regularity in repeated reasoning. Look for and make use of structure. Attend to precision. Use appropriate tools strategically. Model with mathematics. Construct viable arguments ...
Founded in 1920, the National Council of Teachers of Mathematics (NCTM) is the world's largest organization dedicated to improving mathematics education.
Advancing excellence, access, and equity in mathematics requires the intentional design of lessons, classrooms, and schools where every student experiences belonging, agency, and joy. Equity ...
This two-part e-example encourages students to use visualization, spatial reasoning, and geometric modeling to build their own patterns or recreate one from given square arrays. This two-part ...
It is with sadness that we announce the passing of Eugene “Gene” Arthur Klotz, who will be remembered for his visionary leadership in mathematics education and his pioneering role in harnessing ...
The Mathematics Education Trust (MET) is excited to announce it has selected Laurie Boswell, Diane Briars, and Douglas Clements to each receive the 2026 NCTM Lifetime Achievement Award. The award ...
June 4, 2026-The June issue of Mathematics Teacher: Learning and Teaching PK-12 (MTLT) is now available. In the issue's Front-and-Center article, "A New Audience for Assessment Results: The Children," ...
Explore interactive tools and resources for teaching and learning mathematics, provided by the National Council of Teachers of Mathematics.
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