Here are some great books that support the math concepts being taught in Unit Two!

This book uses illustrations to show exponentially increasing peas to show to explore millions, billions, and trillions.

Have you ever tried to count a hundred?  A thousand?  A GOOGOL?  This book explores the world of zeros and tells how the number googol came to be named.

A rhyming book with funny examples explains how to use and compare metric and US customary units of length.  It also introduces tools for measuring--rulers, metersticks and then some!