Target Audience: Grades 2 -- 5
Objectives and Activities:
• Make connections between base ten blocks and hundred charts to build skills so students can use mental math
techniques to add and subtract 2-digit numbers.
• Provide students with a foundational understanding of regrouping for addition and subtraction of 2- and 3-digit numbers
• Practice using base ten blocks to model related sums and differences, along with learning techniques for transitioning
from manipulatives to the algorithm
• Use base ten blocks to model single-digit times double-digit numbers, double-digit times double-digit numbers, and
techniques for transferring from manipulatives to the algorithm
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