A directory of useful objects found on the web for teaching Maths.
Activity, Practise, Quiz
A quiz to check the divisibility of ten integers.
5 May 2011 Edit: 14 January 2018
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NSW syllabus specifies ‘determine and apply tests of divisibility for 2, 3, 4, 5, 6 and 10’. This activity also includes testing for 8 and 9, but I’d probably include those for most students anyway.
GAT students may also like to look at the test for 7 - nice clear video here: http://www.jamestanton.com/?p=577 which can also be used to investigate algebraically why the test works.