Saturday, March 9, 2013

Simple Machines Continued

This week we continued working with simple machines.  We used materials to demonstrate a simple wedge, lever and pulley.  One afternoon, the children made their own pulleys to take home. 

We sorted pictures that showed examples of these types of machines.  For example, a doorstop, a pair of pliers and some sailboat rigging.  It was fun discussing if pliers were a wedge or a lever.  Some machines are both! One card showed a crane that was being used to lift material for constructing a building. 
If you have extra time this weekend, you may want to go see the enormous cranes that are being used to build an apartment building downtown on First and Washington Street.  Talk about strong pulleys!

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