126 BPM
Loading drum sounds…+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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: Reflections and Rotations on the Coordinate Plane (8.G.A.3)
How the beat teaches it: Every slot reflects or rotates a point — a reflection flips the sign of one coordinate, a 180° rotation flips both — then build the new coordinate's distance from zero anywhere in the kit.
This is lesson 20 of 24 in RockBlocks Math, Grade 8, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “Translations,” covered translations on the Coordinate Plane (8.G.A.1). Next is Lesson 21, “Similar Figures and Scale Factor.”
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.