These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Balloon speakers

This STEM activity works to develop pupils understanding of how vibrations from sounds travel through a medium to the ear. In this purposeful challenge, pupils will investigate how a balloon can be used as a simple speaker to amplify sound, by blowing up the balloon and listening to how a range of sounds travel through it. This activity supports pupils to understand how pushing air closely together affects the volume of sound travelling through it and supports the KS2 Science curriculum. This activity has been provided by the IET (Institution of Engineering and Technology).

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.