Mathematics - Addition and Subtraction - Two-digit addition without regrouping - Base-10 Block Addition

Two groups of base-10 blocks (rods and cubes). Top shows the problem (e.g., 45+32). Student physically combines the blocks: drag all cubes together, count ones (5+2=7). Drag all rods together, count tens (4+3=7). The combined total shows 77. Let them try 5 problems. The blocks animate into position.