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Guide students to use base ten blocks to solve two-digit by one-digit addition problems with regrouping. This lesson can be used independently or paired with the lesson Adding it All Up.

This lesson provides students with the opportunity to critically think about data. Use this lesson alongside Line Plots: Representing the Length of Classroom Items or as a stand alone lesson.

This lesson helps students identify even and odd numbers, which sets the foundation for learning about division, prime numbers, and even square roots. Use this hands on lesson alongside Odd One Out!

Help students develop compare and contrast skills while they examine digital and analog clocks. This lesson can be used independently or in conjunction with the lesson Time to Tell Time: Showing and Writing Time.

This lesson provides students with practice as they find the missing parts of a whole and justify their reasoning. Use alongside the What's That Number lesson or alone as a support lesson for students.

This support lesson provides students with the opportunity to explore elapsed time by discussing the time between timer rings. Use as a pre-lesson to Elapseable or as a stand-alone activity.

Use this lesson to help students build their speaking and listening skills as they learn how to critique a flawed response using discussion cards. Use this as a stand-alone support lesson or alongside the activity Break it Down!

Use this scaffolded EL support lesson to help students learn the strategy of decomposing three-digit numbers to add their place values. This lesson can be used alone or prior to teaching Composing and Decomposing to students.