Optical illusion: What to do? The challenge, this time, is deceptively simple: find the word ‘ball’ hidden in a grid full of the word ‘bill’. At first glance, the puzzle looks like a repetition of the ...

As ubiquitous as colored pencils and alphabet posters, lists of “sight words” have long been a fixture in kindergarten and 1st grade classrooms. These inventories identify some of the most commonly ...