Students will understand what it means to regroup how regrouping with base ten blocks can help us when we solve addition problems.Learners will use a variety of math strategies to add two-digit numbers.

Here is an example of a strategy that works using the example 45+37=. 
1.Build out both addends with base ten blocks. First, they will build 45 and then they will build 37. 
2.Add up the ones first. Explain that when the sum is more than 10, we have to regroup. 
3.Review place value by asking...