### He Stood and Delivered

Jaime Escalante taught advanced math to low-income minority students at a time when nobody believed it could be done. He was such an extraordinary teacher that he inspired the hit 1988 movie

*Stand and Deliver*(available on DVD). Escalante's death last week was a major loss for the math community, but his impact lives on.Here is a fun trick from Escalante, just one of the ways he brought math to life. Write the numbers 1 to 10 down the side of a piece of paper. Multiply each number by 9 and write down the products so they form a column (all the ones digits and tens digits lined up). What pattern do you notice in the ones and tens digits?