When Rachel has finished working on her Maths IXL at home she is allowed to use her ipad. She is only able to use the ipad for one hour so she needed to know when the hour was up. She looked on utube to see how to make a timer. Her timer takes one hour for the sand to pour from on container to the other. Rachel's dad helped her fix the ducktape onto the bottles and they got the sand from the beach. She now has a one hour sand timer.