1. Today we are going to look at spring extension when adding masses. Make a prediction for this practical, can you explain why you predict this? Key terms: Spring, extension, elasticity, proportionality

2. Objectives Investigate the extension of springs with masses. Outcomes (5) Gather a full set of results. (6) Draw a conclusion from those results. (7) Analyse how the conclusion differs when changing factors such as adding another spring. Key terms: Spring, extension, elasticity, proportionality

3. Outcomes (5) Gather a full set of results. (6) Draw a conclusion from those results. (7) Analyse how the conclusion differs when changing factors such as adding another spring. Key terms: Spring, extension, elasticity, proportionality Task Carry out the practical measuring the extension of a spring as the mass is increased. Draw a graph of the results. Write a conclusion. Extension: How do the results differ when you use two springs attached together and two springs side by side?

4. Outcomes (5) Gather a full set of results. (6) Draw a conclusion from those results. (7) Analyse how the conclusion differs when changing factors such as adding another spring. Key terms: Spring, extension, elasticity, proportionality Task Calculate your spring constant.