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.