A pre/post test on echolocation. Students love learning about bats and echolocation. This is great because you can use it to teach about how some animals use their senses differently than we do. I have a lesson posted for teaching echolocation in my store.
4-LS1-2 Use a model to describe that animals receive different types of information through their senses, process the information in their brain, and respond to the information in different ways.