- Bill Lombard
Pyramid Math Move the sliders to change the numbers. Two adjacent numbers add to the number above. Can you predict the top number? This creative practice activity facilitates discovery of number patterns and develops number sense. - from Simply Great Math Activities: Number Sense by Brad Fulton; http://www.tttpress.com/products.html
Switch the order of the numbers; does this change the top number? Add 1 to A; how does this change the top number? Add 1 to B; how does this change the top number? What if all four cells in the bottom row are even? odd? contain the same number? What can you predict for a pyramid with five rows?