Long Chains of Sums
Five rows mean ten bricks to compute from a full base, each one resting on the results below it. A slip on the second row travels all the way up, so the pages train care as much as addition.
Totals Past 100
Base numbers stay at 10 or below, yet the top brick can reach 160, which brings three-digit sums into the last rows. The pyramids are a natural next step once four rows feel easy.
Five Clues, Fifteen Bricks
On the pages without a base, five bricks are given and ten are missing. The clues sit where some brick can always be decided from two known ones, so the pyramid can be completed without guessing.