152 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: Sum a Markov State's Outgoing Transition Counts
How the beat teaches it: Every slot gives raw transition counts out of one state to several others — add them all up for the total, the denominator needed to turn counts into transition probabilities. Build that many notes anywhere in the kit.
This is lesson 23 of 24 in RockBlocks Math, Probability, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “Random Walk Paths,” covered count Paths With a Given Number of Up-Steps. Next is Lesson 24, “Capstone: Binomial Mean Plus Variance.”
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.