One is one…or is it? What is 1? Is it a piece of your apple? Is it a whole apple? Is it one bag of apples? Or is it even one tree of apples? Another short from TED-Ed, a lesson by Christopher Danielson, this animation visually shows that, depending on the unit, the number 1 can mean many things in math. What a perfect conversation for the grocery store or over apple slices at lunch!