MARILYN BURNS MATH

Comparing and Ordering Decimals

How Was Amber Reasoning?

A Lesson Designed Around One Problem—100 ÷ 3

My First Ever Card Sort . . . And I’ll Do More

My First Ever Slow Reveal Graph

Part 2: Untangling Area and Perimeter

Untangling Area and Perimeter

Milk Cartons, Origami Paper, a Desmos Tool, and More

When Is a Square Half as Big as Another Square?

Teaching a Number Line Lesson