The next in my series of posts about my top resources and ideas for teaching by topic. This week, Probability.

**Derren Brown **

I blogged here about using the Derren Brown “trick” of flipping 10 heads in a row in lesson

**Always, Sometimes, Never**

This great resource from the Improving Learning in Maths folder is great to use at the start of a module of learning, get pupils to classify the cards and justify their choices in writing on a poster. I then keep pulling out the posters after key bits of learning and get the pupils to draw arrows on their posters for any they want to re-classify based on what they’ve learnt that day, justifying the movement in a different colour. The posters end up pretty messy by the end but I like the message of continual improvement and learning that it gives the pupils.

**Non-Transitive Dice**

I’ve recently discovered Don Steward’s MEDIAN blog and I particularly like his resource “Quirky Dice” for using non-transitive dice to teach Sample Space diagrams. You can buy sets of the dice from the MathsGear website (sets of 3, 5 or 10 dice and special bulk school offers)

**Monty Hall**

An old lesson favourite for most Maths educators I think. I particularly like this online simulation and this video clip of Marcus du Sautoy and Alan Davies

**Birthday Paradox**

Love the counter-intuitive wow factor of doing this in class. Lovely Numberphile video here and a BBC News article, quite topically about the 2014 World Cup teams from Alex Bellos

**Lottery**

The Nrich problem “Mathsland National Lottery” is a good introduction for classes and this Numberphile video explains it well. I like to then get classes to work out the chances of winning the various other Lotto games

**Zener Cards**

I’m guilty of using the “make a dice out of kitchen foil and test if it’s fair” lesson with Key Stage 3 classes but by Key Stage 4 I want something different so I love using these to teach experimental probability. There’s an interactive resource, lesson plan and cards for printing so that pupils can carry out their own mind-reading experiment here

**Experimental Probability Rich Task**

Love this *Which Spinners?* activity from NRIch which has pupils working backwards from relative frequencies to decide which spinners gave the results.

**Hunger Games**

A recent find so untested in the classroom but I like the idea of structuring a Probability unit around the Hunger Games theme. American resources (so may need adapting to fit UK spellings and vocab) here

**Additional Maths Problems**

Although we never taught AQA’s Additional Maths Spec I still use the resources a lot in lessons as plenaries or starter tasks. This file contains 2 great probability questions; the first suitable for Key Stage 3 or either tier at GCSE, the second for Higher GCSE

**Benford’s Law**

Nice to do as an investigation with Key Stage 3 and 4 students although the Maths behind it is more suited to Key Stage 5 Mathematicians – explanation from Steve Mould in this video

If you’re teaching the A-level Stats modules to competent Mathematicians, there’s a nice NRich problem about Scale Invariance.

If you have any gems that I’ve missed, please share them in the comments.