Even or not, here I come. Groups investigate the parity of products and sums of whole numbers in the 17th instructional activity in a series of 21. Using dots to represent numbers, they develop a pattern for the products of two even...

Young mathematicians discover trees organize more than just families — they help factor, too. The lesson begins with factor trees and develops slowly to factoring by grouping and special patterns. 

Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...