This practical lesson teaches pupils how to measure the volume of irregular objects using the water displacement method, combining Eureka cans and measuring cylinders for accurate results. Students then calculate density using their experimental data and apply key health and safety rules for water‑based practicals. This lesson builds essential investigative skills and prepares pupils for mastery work in Lessons 7 and 8.

What Students Will Learn
How to measure the volume of irregular objects using displacement

How to calculate density from practical measurements

How Eureka cans and measuring cylinders work together to collect accurate data

How to apply health and safety rules during water‑based investigations