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MULTIPLICATION "TABLE" (digit sums) 3D Model
- GUIDED TOUR: Click thru ANNOTATION arrows, or J/K keys …
- ZOOM: Use ‘Viewer Mode > First Person’ w/ the arrow keys. (Max ‘Walk Speed’ w/ 2-finger glide upward.)
- ORBIT: Click-n-drag.
[This thing ON STEROIDS!]
A sorta MULTIPLICATION TABLE. Color-coded & geometrically-coded! Front to back are multiples for 1 thru 9; & left to right is 1 thru 100 (covers 1·1 thru 9·100). “Dots” are associated linear functions. They’re the multiplications. Columns are ‘digit sums’.
NOTICE THE PATTERNS!
Look at the 9’s multiplication row (in back). Recall that multiplying by 9: 9·2=18 (where 1+8=9); 9·3=27 (where 2+7=9); 9·4=36 (where 3+6=9) ,etc. The digits always add up to 9! And the first number is alway 1 less than the multiplier. This is shown graphically (w/ a little twist occasionally). Basically, the resulting digits are stacked: their sum is the same height, 9 to be exact.