You can use lots of dots to help grasp large numbers. Here are 103 x 103 = 106 (1,000,000 ; one million) dots.

The dots are dots. The small squares are 101 x 101 = 102 (100) dots. The big squares are 10 x 10 of the small squares, so 104 (10,000) dots. To get a million (106) we need 102 of the big squares. Depending on how wide your window is, that's 10 x 10, or 5 x 20, or 4 x 25, or 3 x 33 plus 1. As below...

Notes: See `Lots of dots'.

Doables: See `Lots of dots'. Add "10", "20", etc markers so looong table doesnt just blur.