Free 6th grade geometry problems covering area of triangles and quadrilaterals, volume, surface area from nets, and polygons on the coordinate plane. Instant feedback, worked-out steps, and a fresh problem every time — no sign-up, and it works great on a phone.
In 6th grade, geometry covers area of triangles and quadrilaterals, volume, surface area from nets, and polygons on the coordinate plane. Cubles Brain Blocks lets students practice all of it free, one problem at a time, with worked-out steps.
Yes — every problem is free with no sign-up and no ads, and a new one is generated each time so it never runs out.
Cubles kits are geometry in your hands: nets, faces, edges and vertices that fold and click into a poseable 3D character. No scissors, no glue, about 15 minutes.