Flatten one end of a drinking straw. With scissors, trim the flattened end into the shape shown in Figure 1. Put the flattened, trimmed end into your mouth and blow hard. With a few tries you should become proficient in producing a loud squawk.
Iowa Science Teachers Journal
© Copyright 1978 by the Iowa Academy of Science
"When You've Reached the Last Straw,"
Iowa Science Teachers Journal: Vol. 15
, Article 12.
Available at: https://scholarworks.uni.edu/istj/vol15/iss3/12