A big thank you and a dozen virtual roses to our first guest math book magic seeker.  Jenny Jankowski is a middle school mathematics teacher from the Chicagoland area. I met Jenny a few years back while working on revisions to the elementary math curriculum Everyday Mathematics. It was a pleasure to be part of her team. Her students are lucky to have her!   Now that she's back in the classroom, I was excited for her to share her experiences using picture books with older students. If You Hopped Like a Frog is written by David M. Schwartz, illustrated by James Warhola, and printed by Scholastic Press. David M. Schwartz is the author of many popular math and science books for children.