Riches in the river

'Riches in the river' is an ELI activity that investigates how valuable ores may become concentrated on river beds. After doing this ELI, pupils can explain how moving water can separate particles of different density; predict where best to look for gold and dense ores on a river bed and explain how density differences can be used to separate valuable ores from less dense waste in a commercial situation.
This is one of many hands-on activities which  is fun to set up and carry out and which will motivate and interest pupils while teaching them a lot more than just a bit of science! Click on our website for hundreds more innovative ideas.