Making a Mess with Membranes! (Experiments at Home)
From Operation Ouch! · 2018
13 min4th5th6thScience
Summary
A full "Experiments at Home" Operation Ouch episode. Hands-on experiments show how membranes -- thin barriers in the body -- let some things through and keep others out. Free on the official Operation Ouch YouTube channel.
Viewer safety
Ages 7+
Some gross-but-friendly body science (real footage) -- a quick preview is wise.
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Teaching resources
Discussion questions
Discussion
Your body is full of thin walls called membranes that decide what gets through.
- What is a membrane?
- Why is it useful for the body to keep some things out?
- Where in the body might a barrier like this be important?
Quick work-a-long
Vocabulary: membrane, barrier, filter, cell, protect.
Try it: Stretch plastic wrap over a cup of water. Poke tiny holes and watch what passes through.