Drag rhythmic values into up to 8 beat blocks per line to build a drum groove, or click a tile then click a block to place it — handy on a trackpad.

🎵 Grade 2 Lesson 1: Addition Word Problems Within 100 — Addition Word Problems Within 100 (2.OA.A.1) mess around all you want, nothing here saves
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Grade 2, Lesson 1: Addition Word Problems Within 100

Math skill: Addition Word Problems Within 100 (2.OA.A.1)

How the beat teaches it: Every slot is a two-digit addition word problem. The total is too big to build as one long row, so split it: a bass drum row for the tens, a hi-hat row for the ones.

This is lesson 1 of 23 in RockBlocks Math, Grade 2, a free course where every lesson turns a math idea into something you can count, hear, and play. It is the first lesson in Grade 2, so it assumes no prior math or drumming. Next is Lesson 2, Subtraction Word Problems Within 100.”

Every slot above (A, B, C, D) is its own question, and it’s a real, blank RockBlocks beat the whole time — the same drag-and-drop tiles, kit, tempo, sheet music, and drummer view as anywhere else on the site. Tap ❓ Questionin the corner to read the current slot’s problem, build your answer right in the grid, then tap ✓ Check Answerto grade it. Once you’re done, keep going: expand the beat, drop it into a Stack, or save a copy to your own page — nothing here overwrites the lesson itself, so every visitor still starts from the same blank slots.