158 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: Find the Smallest k Where aᵏ ≡ 1 (mod n)
How the beat teaches it: Every slot gives a and n — compute successive powers of a mod n until the result is 1. That exponent is the multiplicative order. Build that many notes anywhere in the kit.
This is lesson 14 of 24 in RockBlocks Math, Number Theory, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “LCM via Prime Factorization,” covered find the LCM by Comparing Prime Factorizations. Next is Lesson 15, “Wilson's Theorem.”
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.