## public lessons

These demonstration lessons are taught by practicing teachers and professional developers. These lessons have been extensively field-tested in multiple settings and refined over time, and are generally presented to an audience of participating students and observing teachers.

## featured lesson

**Decimal Place Value**

Erika Isomura leads a lesson segment, recorded over two days one week apart, on decimals and place value. She builds on her students’ prior work with fractions and develops her students’ understanding of magnitude and number sense.