I came across this on the internet a while ago and thought I'd give it a go. Turns out its a great little activity for students and gives them a good incite into planning and conducting an experiment, with almost no prep needed from the teacher.
The only materials that are required are some drinking straws, card and selotape. The card is cut into strips and then taped into circles (see pic below). These circles are then taped onto the straw. You should find with the arrangement shown below these little things will fly a good 10 or 15 meters (I was sceptical too but give it a go).
The length of straw used determines how far they fly, as does the number of card circles added. Either of these can be used as the basis for an ivestigation (we found about 2 straws taped together is best). Get the students to choose one variable and work out a way to investigate it. A great experiment that requires almost no materials or planning.
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