Search Results

Learners compare a life-size drawing of a Tyrannosaurus rex head and a full-size Sinornithosaurus body to understand that dinosaurs varied in size.

Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell.

In this activity (on pages 2-8), learners experience how scientists use classification in their study of animals.

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.