Now that the nights are drawing in you can get the whole class involved with some data collection, all you need is them wearing their coats, a torch and a data logger. Ask them to take a look at each others coats and predict which one will reflect the most light to say safe on their journey home from school. Get the children to put themselves in a line from least reflective to most reflective. Ask them why they have chosen the order. What properties do the coats that they think will keep them safest have? Then in a darkened room shine a torch on each coat to see how much light is reflected.
Using a DATA HARVEST Vu+ logger will really help them collect accurate data which they can then plot on a graph. https://store.data-harvest.co.uk/vu We think this is the easiest data logger on the market and it can be used across the whole age range from nursery to year 6.