There are many pupil learning outcomes from doing this activity. Pupils can describe how moving water can both erode, transport and deposit loose sediment of various sizes. They can explain that, in general, it takes more energy to move larger particles than smaller ones. They can describe how small channels fill with sediment and switch and how alluvial fans and microdeltas develop. They can explain why the most dense minerals accumulate whenever the speed of the water slows and they can relate this small-scale investigation to real rivers, such as the Ganges, and understand how a large river might behave when in flood. As you can see, there is lots of potential in this activity - click HERE to view it, either in English or in Spanish.
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