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 7 Lesson 2: Constant of Proportionality — Constant of Proportionality (7.RP.A.2b) mess around all you want, nothing here saves
118 BPM
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Grade 7, Lesson 2: Constant of Proportionality

Math skill: Constant of Proportionality (7.RP.A.2b)

How the beat teaches it: Every slot gives a matched x and y from a proportional relationship — divide y by x to find the constant of proportionality k, then build that many notes anywhere in the kit.

This is lesson 2 of 24 in RockBlocks Math, Grade 7, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, Unit Rates with Fractions,” covered unit Rates with Complex Fractions (7.RP.A.1). Next is Lesson 3, Using y = kx.”

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.