This video is very short: only 5 seconds long. If you don't know how to play it, see the instructions at the bottom of the page.
A student demonstrates how how to operate the propeller here. I had to slow the clip down to see it.
Another student makes the propeller change direction, also in slow motion.
This video shows how to operate the propeller stick. Notice that pencil is slanted. Unfortunately, it is difficult to video tape because the propellers turn so fast the camera cannot capture the motion.
Go to propeller stick introduction page
Back to the Science Toy Maker homepage.
If you have a fast internet connection, you should be able to simply point and click to play the short video file. If the picture is halting even the second time played, right-click, "save target as" and remember where you saved it.