List of Materials :
2 pieces of tape
1 binder clip
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Step 1: Attach String
First you put the 15 inch string trough the hole of the protractor . then you tape the back of the protractor where the srting is tied at so that it is held in place.
Step 2: Attach Binder Clip
Then you clip on a binder clip to the tip of the string to hold it down as a weight
Step 3: Attach Straw
Lastly you tape a regular straw to the base of the protractor