Discovery at Home - explore gravity and *how-to* make a marble run 

Gravity! Watch how you can make your own marble run at home with hills and loop-the-loops! This is part of Discovery Museum's educational resources on a wide range of themes that families of all ages can try at home.
For the full selection of activities, films & resources ranging from transport, vintage toys and illusion see discoverymuseum.org.uk/discov...