Curated OER
13 Ways to Tell Time Backwards
Students explore different ways geological time can be measured: comparing the time dimensions for each method, the mechanisms of each method, and the materials used.
Curated OER
Why Don't Whales Have Legs?
Young scholars are given a variety of materials and are asked to design a heat loss experiment that results in a reasonable explanation of "Why don't whales have legs?" students work with the theory of natural selection.