A very short video with a powerful effect. Small changes over time produce dramatic results:
h/t: Michael Fisher
Definitely worth sharing with the little monkeys at home.
Then pair it with this one on biological evolution by Carl Sagan:
If you are looking for more fun you can try a game of “telephone.” (Hint for small families. We used to do this with long, tricky sentences. Try Shakespeare or a proverb. I’d start and whisper to the kiddo. The kiddo whispered to Daddy and Daddy purposefully got it wrong every time.)