Here's what you need:
Toilet-paper tube
Tongue depressor or ice-cream pop stick
Heavy paper
6" (150 mm) piece of pipe cleaner, folded in half
Markers or crayons
Scissors and glue
Brainpop is a great source for short video's. They are a lot of fun for elementary school students. You do have to pay for it, but our school has purchased it so I bookmarked this video on angles