Ear to the Ground features voices from various corners of the mathematics education world.
Karen S. Karp, Sarah B. Bush,, and Barbara J. Dougherty
Brandon G. McMillan and Theodore Sagun
This instructional activity gives teachers access to student thinking that can be leveraged to extend and connect their ideas.
S. Asli Özgün-Koca and Matt Enlow
In this month's Growing Problem Solvers, we focused on supporting students' understanding of congruence and similarity through rigid motions and transformations. Initial understandings of congruence and similarity begin in first grade as students work with shapes in different perspectives and orientations and reflect on similarities and differences.
Steve Ingrassia and Molly Rawding
Problems to Ponder provides 28 varied, classroom-ready mathematics problems that span grades PK-12, arranged in order of grade band. Links to the problem answers are available in this department.
Nancy K. Mack
Exploring number systems of other cultures helps students deepen mental computation fluency, knowledge of place value, and equivalent representations for numbers.