Use a double 10-frame to play a game and represent adding three single-digit numbers. Warm up with a Mystery Math Mistake to decompose teen numbers. Use a double 10-frame to represent adding three ...

EMBED <iframe src="https://archive.org/embed/a2_Circus_Math_v1.0_1984_MECC_US" width="560" height="384" frameborder="0" webkitallowfullscreen="true ...

From content consumption to content creation, there are many ways to use mobile devices with students. They can create how-to videos for authentic audiences, explain their thinking through ...

“Darla, as you were comparing 2/6 and 2/4, I heard you mention that 2/4 equals 1/2. Can you tell me more about your thinking?” Are you curious about what Darla, a third-grade student, might say next?