Measuring Time

Students have been working on reading and writing time with both analogue and digital clocks. We’ve now moved on to measuring elapsed time or time intervals. Today’s problem was:  Ben’s favourite TV show starts at 11:45 a.m. and lasts 1h 35min.  When will the show be over?

We have tried using three different strategies:  1. subtracting minutes and hours, 2. timeline, 3. manipulating a clock and explaining our actions.

Look at the solutions below.  Can you identify the strategies used?