Four people dressed as detectives walk past with magnifying glasses. NARRATOR: This song is all about shapes. Not flat shapes like circles and squares, but solid shapes like cubes and cones. Let’s ...

The T-1000 in Terminator 2 could change shape at will, morph its hands into blades or turn parts of its body into a fluid to move through metal bars. “I saw this movie when I was a child—it was like, ...