This is the third of four lessons on the normal distribution, which builds on the first two lessons. This is your A/A* material, looking at different types of questions and problems. This is an excellent resource, with lots and lots of excellent teaching slides, 21 slides.
Specifically, this lesson is for teaching about how to work backwards and different questions. It does touch on linear combinations, so I recommend teaching that first (also available from my shop) and looks in detail at little issues/ mistakes that people can make. This is a vital lesson for your top end students and gives less able students more time to practise the normal distribution. I have therefore included two worksheets (exam questions) aimed at different abilities students and then come with accompanying mark schemes.
NOTE: Feel free to browse my shop for more excellent free and premium resources and as always please rate and feedback, thank you.