"A superb resource for teachers! These lessons are rich, focused on the big ideas of mathematics, appropriate for young students, and conceptually based. Melissa and Stephanie have done a masterful job of describing what teaching for understanding really means."
—Juanita V. Copley, Professor Emerita, University of Houston
"In a primary math classroom, is there any other tool that is more important and appropriate than the hundreds chart? Your students will be building, navigating, investigating, and communicating their way to a stronger sense of number. I am not sure if you could find many first graders who wouldn’t love to build a wacky hundreds chart and then talk about it with their peers. What a fabulous resource for educators!"
—Beth Terry, math specialist, Alexandria City Public Schools and 2004 PAEMST Awardee