YouTube description: You can make a movable hole in soap film with a loop of thread. It's surprising when you first see and it's fun to think about why it behaves the way it does. It's also a useful... continue reading

posted by Aard Vark (oritteropo) 5 years 12 months ago • 512 views • 6:03

Is what is said ... what is implied? YouTube: Last week we talked about language and meaning. Today, Hank explores some of the things that complicate meaning and how we get around that. We’ll explain... continue reading

posted by PlayhousePals 8 years 6 months ago • 596 views • 9:11