Homeschool Science: See-through Animals

This homeschooling science lesson started with a question at lunch: "Why can't I see my food go into my stomach?"

 We talked about skin and muscles and bones and looked at them in a pop-out book.

Then we watched see-through animals on YouTube, like this glass-winged butterfly.

This is Talia's diagram of a glass catfish drawn with window markers on a clear package from something.