The 7th graders had to build a Rube Goldburg Machine for GTT (Gateway to Tech). A Rube Goldburg machine is a long chain of events that completes a series of simple events that in the end completes a simple task. They learned about the six types of simple machines. They had to use at least five of the simple machines to build their machine.
Inclined
plane: an inclined is a inclined flat surface that allows you to exert your input
force over a long distance.
Wedge: a
wedge is a device that is thick at one end and tapers to a thin edge at the
other end.
Screws: a
screw is an inclined plane wrapped around a cylinder.
Wheel (and
axle): Ex screw driver (handle=wheel and shaft=axel)
A wheel &
axle is a simple machine made of 2 simple circular or cylindrical objects that
are fastened together and rotate a common axel.
Pulley: Ex:
raising and lowering a school flag each day. A pulley is a grooved rope or a
cable wrapped around it. When you pull the rope you change the amount &
direct of your input force.