159 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: Test Two Vectors for Independence Using |ad - bc|
How the beat teaches it: Every slot gives two vectors as the rows of a 2x2 matrix — compute the determinant's absolute value. A nonzero result confirms the vectors are linearly independent (and equals the parallelogram area they span). Build that many notes anywhere in the kit.
This is lesson 10 of 24 in RockBlocks Math, Linear Algebra, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “Rank of a Matrix,” covered find the Rank by Counting Independent Rows. Next is Lesson 11, “Linear Combinations and Span.”
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.