Special Offer

Click to subscribe


Special offers for:
ASE Members
Small Schools
Groups of schools
Teacher delegates at conferences and Primary Upd8 courses


The Centre for Science Education
The Association for Science Education
Part of ASE

What's that buzzing noise?

Topic: Sound

Howard Stapleton has invented the Mosquito, a device that makes an annoying noise that only teenagers can hear. The device emits a very high frequency tone and once over 25 we lose the ability to hear this frequency range. In this activity children design a mobile phone with a ringtone that only children can hear. They learn that humans have a different hearing range to animals. In an extension activity they learn that pitch can be changed by varying the length of a column of vibrating air. They use this knowledge to design a dog whistle.

Large activity image

Reviews & Comments

Write your online review to share your feedback and classroom tips with other teachers. How well does it work, how engaging is it, how did you use it, and how could it be improved?