# Category: Minimally Different Exercises

## Finding the nth Term of a Quadratic Sequence

## Surds: Rationalising the Denominator (2)

## Rounding to 1 Significant Figure

## Surds: Rationalising the Denominator

## Rounding to the nearest 10

## Simplifying Surds (2)

## Simplifying Surds (1)

Finally got to use these today with my Year 9 class. Surds are a fascinating topic, in that the process of ‘Reflect, Expect, Check’ does not yield as high a success rate in terms of expectation – for a novice learner, this is challenging, as they do not follow patterns in the way they might be used to. Super pleased with how these turned out, though – allowed for lots of excellent discussion.

## Calculating Percentage Change

## Trigonometry – Missing Angles

Created this in order to try and overcome the problem of students seeing trigonometry of ‘that thing with SOH CAH TOA’ and it being something **entirely** procedural. My Year 9s are getting on really well with this – question 10 is a wonderful discussion point.

NB. Have intentionally not varied orientation of triangles here – that’s something that I will do in a separate exercise.