Today we were tasked with making a timer to help Cinderella know when it will be midnight.  The timer needed to be 20 seconds!!!

We talked about different timers that we know and we did some research about them.  Then we thought about two designs we’d like to do and finally chose one.  We drew this in detail and made a list of materials and tools required.

We knew that this was going to be a tricky task as we set about making sand timers.

Here are some pictures of us making them and testing them.

We have yet to evaluate them.  We’ll do  it next week.  We had a great day.