Better Lesson
Better Lesson: Sorting by Color
Counting bears that are the same size and shape help students focus on just one attribute.
Science Buddies
Science Buddies: Sorting Out Sedimentation
Sedimentary rock forms in layers that are deposited one after the other over long periods of time. Oftentimes, sedimentary rock contains fossils and other debris that are deposited within the layers. Use this experiment to investigate...