learn multiplication and division... like, yesterday!
McKellar, Danica
"Unleash the magic of math with Danica McKellar, her friends Mr. Mouse and Ms. Squirrel, and the exciting contraption the Times Machine!"--Provided by publisher.
Struggling with her Puerto Rican identity, her grandfather's memory loss and transfer to a nursing home, and her sister's depression, seventh-grader Cassi joins the Mathletes at school, finding comfort in numbers and in her new friendship with Aaron.
Sixth-grade mathematical genius Charlie Lewis, the Whiz Kids, and new friends follow their hunch that eccentric billionnaire Blake Headstrom is importing mammoth tusks for sinister purposes.
"Provides an introduction to mathematics and its uses, discussing numbers and counting, shapes and measurements, patterns and sequences, data and statistics, and probability and logic"--OCLC.
Contains step-by-step instructions for nine mathematics-themed projects, with a focuses on reusing everyday materials instead of buying new craft supplies.