This activity allows the user to compare to quantities by estimating. Students use three types of estimations: counting, length, and area. An interactive activity and teacher resources are included.

Practice estimating the volume of real life objects using milliliters and liters. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

During our exploration of each previous lesson, we have learned about many of the factors that contribute to the ongoing destruction of our environment. In our final lesson, we will make a holistic appraisal of the impact that each of...