Get your students thinking about how the number line and the word problem are related! Use this lesson alongside Get There On Time: Elapsed Time Word Problems or on its own.

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.

Dive deep into using base-ten blocks to solve two-digit subtraction problems with regrouping. This lesson can be used independently or in conjuction with the lesson Double Trouble: Subtraction Practice.