Enlargements and reductions

One topic I had to bring to the classroom during my internship at La Presentación School was enlargements and reductions. In particular, my classroom was quite disinterested in mathematics and I thought of doing it in a more manipulative way. To do this I divided the class into groups of 5 and assigned each group a colour. 

After that, I gave each group a set of geometric figures of the colour they had been assigned. The task of each group was to write down the name and size of each of the shapes and then make an enlargement and a reduction of each of them.

Finally, a joint mural is made by all the groups where the different shapes are stuck together with their corresponding enlargements and reductions and the process and the result is explained next to each one of them. 

The final result is a poster that can be put up in the classroom as decoration to keep the process in mind.