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 1 Lesson 22: Comparing Lengths — Ordering by Length (1.MD.A.1) mess around all you want, nothing here saves
88 BPM
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🎯 Lesson: 0/4 · 🥁 0 solved · 0 badges

Grade 1, Lesson 22: Comparing Lengths

Math skill: Ordering by Length (1.MD.A.1)

How the beat teaches it: Every slot gives you three objects of different lengths — build one row per object (short on the high tom, medium on the mid tom, long on the low tom) so the three rows show the order.

This is lesson 22 of 24 in RockBlocks Math, Grade 1, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, Telling Time to the Hour,” covered telling Time (1.MD.B.3). Next is Lesson 23, Fractions: Halves.”

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.