Using isometric dot paper in maths
Dot paper is the version used in school geometry: students join dots to draw cubes and the solids built from them, then count faces, edges and volume. Each dot has six neighbours at equal distance, so every segment you join is the same length, whichever direction it runs.
Wider spacing (½ inch or 1 cm) suits younger students and connecting cubes; ¼ inch suits detailed drawings. For a full line grid see isometric graph paper.