Common Core State Standards for Mathematics (CCSSM) is different from the objectives that many teachers have previously experienced in their state frameworks. Although the mathematical topics of the two may be the same, the mathematical expectations within the Standards require a deeper understanding by teachers and students. In this article, the…

Effectively teaching mathematics to speakers of other languages requires teachers to recognize, validate, honor, and support the math that these students have already learned before entering a U.S. classroom. To do so, they must become aware of procedures, types of math instruction, and students' current performance levels. They should be…

This article describes how research on children's geometric thinking was used in conjunction with the picture book "The Greedy Triangle" to gain valuable insights into children's prior geometric knowledge of polygons. Exercises focused on the names, visual appearance, and properties of polygons, as well as real-world connections for each, are…