We are revising in year 10 and the topics of revision are Similarity including scaling units of area and volume, Trigonometry and Pythagoras and Indices. I decided that I wanted students to practice Trigonometry and Pythagoras whilst working on changing units of measure in area and volume problems.

During one of the Friday night socials, Nathan Day and I thought about an activity where students find he reciprocals of different types of numbers.