Counting each row by tens — 10 ... uses an understanding of 10 to find where 69 goes in a 100-block square. Credit: Holly Korbey for The Hechinger Report Number sense is so innate to many adults that ...

rather than counting each square up to 42, is an example of number sense. A student in Melissa Williams’ kindergarten class at the Westminster School in Atlanta, Georgia, uses an understanding of 10 ...

Complex behaviors can arise from simple mechanics, and that’s demonstrated by a block of rubber that acts as a counter. The block contains beams, and by controlling how the block is compressed ...

A volleyball match begins when the ball is served into play. A team may touch the ball three times – not counting blocks – on its side of the net. The usual pattern is as follows: a dig (underarm pass ...