Transformations

This may be a longer lesson than most. May need one and a half sessions.   The Monty Hall Problem{...}

Challenge Task: Well I wonder how often you have noticed that there are numbers around the place that follow one{...}

http://https://nrich.maths.org/1783 I’m thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number{...}