7 Puzzle – challenge yourself as well as your students!

Along with stumbling across the 100 Word Challenge and School of Puns I recently found Puzzle 7 via Twitter. Puzzle 7 is a maths challenge which is posted each day at 7am; the puzzles can be found on Twitter (@7puzzle) or on the 7 Puzzle blog: . The puzzles come in a range of difficulties appropriate for a range of students and my maths class have had lots of fun with them.

As a starter to the lesson I can put one of his problems on the board:

Using the numbers 1 2 3 once each, with + – x ÷available, is it mathematically possible to achieve all the target numbers from 1-9?

See the blog post here: http://7puzzleblog.com/13-may-2012-possible-1-2-3/

Or even as a whole lesson focusing on problem solving strategies:

Find at least one way to put in some operation signs to make these digits 1,2,3,4,5,6,7,8,9 equal 100. You must not change the order of the numbers and you must use them all!

See the blog post of the children who solved this problem here: http://bvsyear4.wordpress.com/2012/07/09/maths-challenge/

This is a great resource for teacher and pupils alike as they can participate in class or at home. I hope to use these puzzles even more in the future.

If you like maths puzzles Paul, who runs 7 Puzzle, also offers both Primary and Secondary school workshops. See the 7 Puzzle blog for more information.

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