You can fill a whole day (and even overnight) with these activities, so take your time and get stuck in.
Andrea and his sons Alessandro and Serafino build rubber band cannons from crisp tins and drinks bottles, and use them to explore projectile motion... and knock down any target they can think of.
Mark and his girls Sasha and Lara build and race their own balloon powered cars.
Make an uncooked egg bounce!
Danielle and Michael make self-propelled rockets out of juice bottles in an adventure playground, and learn how a chemical reaction which produces gas can be used to propel a rocket.