Spectrum Math, Grade 1 (Little Critter Workbooks)
Mercer Mayer – writer and illustrator for Little Critter First Readers,        as well as Little Critter Spectrum began writing and illustrating        children’s books in 1966 and since that time, he has published over 300        titles. Open almost any of the award-winning author/illustrator’s books,        and out may pop dragons, cuddly monsters, wonderful creatures, and        endearing critters.“Most of my books are about things that happened to me when I was a        little kid,” says Mercer. “Now that I’m a big kid, I write about things        that happen now, especially with my own children. They always help        remind me of what it was like.”Born in Little Rock, Arkansas, Mercer Mayer spent his childhood hunting        lizards and snakes in the swamps near his home. During his teenage        years, he attended the Honolulu Academy of Arts. He later received        additional training at the Art Students League in New York City. Upon        completion of his studies, he set out with pen and ink to write and        illustrate a collection of children’s book, reflecting many of the        adventures he experienced as a child.