Each slide asks "What is this number divisible by?" It then uses animation to show the factors of that number. A prompt then asks "How do we know". I'm planning to use this as a starter to learning Divisibility. The pupils will display their answers on their indivudal pupil whiteboards and then answer "How do we know" to the class or to their table mates.

All the key words I think my (Y7) class need for looking at Divisibility. There are two resources: >The cards are ready for printing out on card and then cutting out to use for card match table collaborative group exercise. Top Tip - get them to place the keywords in alphabetical order to match your answer sheet! > The worksheet is simply a copy for them to stick into their exercise books as notes. Get them to highlight all the key bits which are important to them. Use a copy of this for checking the answers on the card match. The cards can be printed out onto three different colour cards which make it easier for them to match a key word with its definition and the example. If you have time it would be worth grouping the keywords into difficulty levels and then only giving a subset to the lower ability tables or middle ability tables. Alternatively do what I'm going to do and give a full card set to each mixed ability tables.

Short PowerPoint which challenges misconceptions when matching & simplifying algebraic expressions. Pupils can write their answers (and then show the correction) on individual pupil whiteboards - either on own, in pairs or in tables of four. Pupils can use red, green, yellow (for don't know) cards to show their answer. For extra fun you can have them point "Usain Bolt Style" to the left or right of the room for their answer. For complete chaos you can have them run to the left of the right of the classroom for yes or no. The important thing is to get pupils to explain their answers to help everyone's understanding. You can quite easily and quickly add many more questions by simply duplicating a yes or no slide and adding in your changes. I would usually back this exercise up with a worksheet or textbook exercise which they can do independently afterwards. You can extend this by getting the pupils to make up their own slides (on their whiteboards) to test other pupils.