Fran: Now you're going to need ... mechanism that helps people move things more easily. It has three important parts - the fulcrum, the load, and the effort. Load The heavy thing people want to ...

Agreed.But what can we use them for other than lifting bricksand lifting rulers? Loads of things!So ... this one involves marshmallows, OK?What I need you to do is get a marshmallow from one ...