126 BPM
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4/4 ×2
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.
Math skill: Construct and Interpret Two-Way Tables (8.SP.A.4)
How the beat teaches it: Every slot gives a category's total and how many of those also fall in a second category — subtract to find how many are in the first category only, then build that many notes anywhere in the kit, the last lesson of the year.
This is lesson 24 of 24 in RockBlocks Math, Grade 8, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “Scatter Plots and Lines of Best Fit,” covered use a Line of Best Fit to Make Predictions (8.SP.A.2/A.3). It is the final lesson in this grade.
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.