Water rocket workshop

BJPCE Limited

A great indoor/outdoor activity in which pupils work in groups of 2-3 to build their own water rocket from mostly scrap materials and then launch them up to 150m in the school field.

Typical timetable:

  • Short talk on the science of rockets including demonstrations with balloons, foam rockets and darts
  • Pupils build their own rocket
  • Fair testing to work out the optimum air/water ratio
  • Final assembly of rockets including mission patches
  • Launching up to 150m in the school field
  • Opportunity to measure time, distance and record results
  • Short careers link using "faces of Nasa"
  • Introduce the NPL water rocket challenge videos and resources

Expected outcomes

Science subject knowledge:

  • forces and motion
  • aerodynamics: drag, centre of gravity

Enquiry skills:

  • Fair testing
  • Predicting and measuring


  • Collecting data
  • Presenting results

Other skills:

  • Teamwork
  • Co-operation
  • Following instructions
  • Problem solving
To book this activity, please contact:
Brian Egles
07785 527324

United Kingdom

The STEM Directory is provided as a service to support you in finding enrichment opportunities. The activities are offered by external providers and are not endorsed by STEM Learning. We are not responsible for their content or delivery.

How to take part/get started

Book a full-day workshop and make sure the school field is available all afternoon.

Start collecting the "scrap materials" you will need:

  • 2 litre carbonated drinks bottles (2 per rocket)
  • Cardboard such as cereal packets

Order the supplies you will need if they aren't already in stock:

  • Sellotape (ideally one roll per table and, even better, in a cutter/dispenser)
  • One nice sheet of A4 card per rocket for the nose cone
  • Plasticene (50g per rocket) can be reused

Check equipment is available:

  • Scissors
  • Pencils, rulers
  • Scales for weighing 50g
  • Measuring jugs 500ml or 1 litre
  • Stopwatch, trundle wheel if you want to measure time & distance during launching
  • Clipboards or other way of recording data
  • Safety glasses for launching (only really need 4-5 pairs if sharing across groups is OK)


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