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.
Unfortunately, this video of my daughter whistling on an acorn cap clips the volume of the sound, so it does not convey how shrill and ear-splitting the whistle is (or maybe that's good).
This picture shows how to hold the acorn cap to make it whistle.
Go to Acorn Cap Whistle 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 MPEG movie. If the picture is halting the first time through, click play on your media player and it ought to play smoothly the second time.
You will almost certainly have to hit play a second time if you have a dial-up internet connection. If you still can't get it to run smoothly, you will have to right-click, then "save file as..." or something similar to that. Take note of where you are saving it. They are short and highly compressed, so they won't take long to load. Even with a fast connection, save the file like that if the picture is jerky. To play the file, find it and double-click on it. It will play in the default media player.