Measuring Time

Measuring Time

In our class room we have been using timers, waiting lists and 2 small hour glasses to help children takes turns.  One hour glass lasted one minute (not long enough), and the other about 15 minutes (too long).

I proposed that thing make their own hour glass and they decide the amount of time.
The Materials I provided for making an hour glass(except it won't be an hour).

2 plastic bottles

bottle cap with hole

salt

tape

funnel

digital timer (stop watch)

Hour Glass - a glass vessel for measuring time in which sand runs from an upper compartment to a lower compartment in an hour.

The children worked to tape two bottles together.  This work provided an opportunity for the group to collaborate and make new connections.

I wonder if the children realized that the more salt they used, the more time it took to come through the hole in the cap into the other bottle? 

We placed the hour glass beside the sensory table to help them take turns.
  
Will the children make another hour glass?  Will this process help them think about time?