"Scientists and engineers use careful testing, comparison, and smart tools or designs to discover new information and solve problems—even when the answer changes over time."
Ask the class before watching:
"Can you think of a time you changed your mind because you got new evidence, tried a new test, or used a tool that helped you notice something you missed before?"
A fossil is the preserved remains or trace of a living thing from long ago.
If we found a fossil with a strong jaw, we could compare it to other animals to guess what it ate.
Researchers are people who study something carefully to learn new information.
The researchers re-checked the old bones and noticed clues that helped them change their answer.
Origami is the art of folding paper into shapes.
Using origami folds, we could build a paper bridge that holds more weight than flat paper can.
Ultraviolet (UV) is a kind of light that humans usually can’t see without special tools.
With an ultraviolet flashlight and adult help, scientists can reveal hidden patterns that don’t show up in regular light.
Have students answer these questions after watching the episode.