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.

🎵 Kindergarten Lesson 9: Adding One More — Addition Word Problems (K.OA.A.2) mess around all you want, nothing here saves
72 BPM
Loading drum sounds…
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
4/4 ×2
🎯 Lesson: 0/4 · 🥁 0 solved · 0 badges

Kindergarten, Lesson 9: Adding One More

Math skill: Addition Word Problems (K.OA.A.2)

How the beat teaches it: Every slot is a tiny word problem — you start with some, get a few more, and build the new total.

This is lesson 9 of 24 in RockBlocks Math, Kindergarten, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, Which Group Has More?,” covered comparing Groups (K.CC.C.6). Next is Lesson 10, Take Away: How Many Are Left?.”

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.