The Screw Lab and Building Simple Machines with K'Nex

In our unit on screws, students looked at the pitch of a screw.  In the end, students learned that the closer the pitch, the easier it is to turn but it takes longer.  The farther the pitch, the harder it is to turn but the less turns it takes.  Students then wrapped an incline plane around a pencil to learn the connection between the two simple machines.

                                       Building Compound Machines with K'Nex.

                                        Students learned the importance of following directions!