Designing a marble run can be a really fun activity that you can do either on your own or in a group. You can make one out of recycled materials or anything that you can find, just use your imagination... You can make it big or small, easy or complicated, but before you start there are a couple of things that you need to think about
The first thing you need to think about is GRAVITY. Gravity is an invisible force that holds things to the surface of the Earth. Gravity stops things floating away and because of gravity you will need to make sure that your marble is always running downward. To learn more about gravity have a look at the BBC bitesize website.
The second thing you need to think about is FRICTION. Friction is another invisible force that you find when two surfaces rub against one another. As your marble may be running over different surfaces you will need to think whether this will make your marble speed up or slow down. To learn more about friction have a look at the BBC bitesize website.
So have a look around and see what you can find...
Maybe you have some toilet roll tubes, yoghurt pots or carboard boxes, or you may find some paper plates hidden in the back of a cupboard, these are all great materials to get you started. Have a look at some examples that I have made. I hope you have fun with this activity!
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