Making 24
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Making 24 Author(s): John Berry Source: Mathematics in School, Vol. 36, No. 1 (Jan., 2007), p. 34 Published by: The Mathematical Association Stable URL: http://www.jstor.org/stable/30215989 . Accessed: 27/09/2013 06:33 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . The Mathematical Association is collaborating with JSTOR to digitize, preserve and extend access to Mathematics in School. http://www.jstor.org This content downloaded from 152.14.136.96 on Fri, 27 Sep 2013 06:33:53 AM All use subject to JSTOR Terms and Conditions
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Transcript of Making 24
Making 24Author(s): John BerrySource: Mathematics in School, Vol. 36, No. 1 (Jan., 2007), p. 34Published by: The Mathematical AssociationStable URL: http://www.jstor.org/stable/30215989 .
Accessed: 27/09/2013 06:33
Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp
.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].
.
The Mathematical Association is collaborating with JSTOR to digitize, preserve and extend access toMathematics in School.
http://www.jstor.org
This content downloaded from 152.14.136.96 on Fri, 27 Sep 2013 06:33:53 AMAll use subject to JSTOR Terms and Conditions
making 24
by John Berry
This puzzle provides a nice warm-up activity for students from Primary through to the sixth form as a way of getting the brain in gear and as a way of encouraging working in pairs. The rules are quite simple:
Be careful! Do not muddle up 6's and 9's. The base of the digit is towards the centre. M
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Use all four numbers only once to make the number 24 using the operations of arithmetic: adding, subtracting, multiplying and/or dividing. Each number must be used once and only once!
Keywords: Puzzles; Maths lesson starters.
Author John Berry, The Centre for Teaching Mathematics, The University of Plymouth, Plymouth, Devon PL4 8AA. e-mail: [email protected]
34 Mathematics in School, January 2007 The MA web site www.m-a.org.uk
This content downloaded from 152.14.136.96 on Fri, 27 Sep 2013 06:33:53 AMAll use subject to JSTOR Terms and Conditions
