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A series of activities to consolidate (Master!) understanding of how to work out the circumference of a circle given the radius or diameter. It is designed to be used after we've investigated how PI comes from C / d and we've introduced the idea of C = PI x d.

There are three sets of cards which are ready to be printed out on different coloured card. Each card activity has a matching work sheet done as a sticker so that there is a record of the activity in the pupils exercise book.

Each activity card set is designed to be given to be a mixed ability table of four pupils. They discuss and (hopefully!) develop their understanding!

Card set 1 is given out as 20 cards where the pupils "Diamond Nine" (or any other valuing/ranking/ordering layout) the cards discussing which are the most useful facts for finding the circumference. There are few wrong answers as most of the points are right for most questions. The sticker backs this up into the books.

Card Set 2 is given out as 16 cards where the pupils again rank which are the most important to remember when doing their working. Again they all are correct so it's a discussion and learning activity. The sticker is then just a check list to go in their books. I will always ask them to use a highlighter pen to indicate the key phrases etc.

Card Set 3 is given out as a set of 9 cards. (Print out one card as an answer sheet for you) and the pupils simply have to put the cards in order. The sticker then requires them to back it up in to their books.

This activity uses some of the ideas which our school has been made aware of in recent courses - a) Magenta Principles by Mike Hughes and b) Achieving Mastery in Mathematics.



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