A number plus its square
This activity was presented during the opening session of the T3 Annual Conference on 3 July 2010. Those who were present were asked to find a way of solving the problem a number plus its square equals 16.
The screenshots below and the teacher notes include various approaches to the problem but there are likely to be many more. If you or your students find other ways of solving the problem, please share them using the Add Comment button below.