Years ago, when her eighth-graders struggled with basic subtraction, teacher Rita Frenzel tried something different: She taught them chess. The math scores climbed, and so did a passion that would ...

The Common Core State Standards suggest several strategies for teaching early addition and subtraction, including one called “making ten.” That strategy—which I used as a teacher myself years ago, ...

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Students put all their addition and subtraction skills together to solve equations. In this lesson, students put all their addition and subtraction skills together to solve equations. Julia begins ...

Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

A series of short animated films for primary schools, following the adventures of Olivia and Hassan as they're challenged with maths problems to find their way through Hypatia's mathematical maze. Hi, ...

The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics ...