Practice the coordinate plane: find the distance between points and the area of shapes plotted on a grid.
If two points share an x-coordinate or a y-coordinate, subtract the coordinates that differ. From (2, 3) to (2, 9), the distance is 9 − 3 = 6 units.
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.