median
don steward
mathematics teaching 10 ~ 16

Tuesday 28 June 2016

number links

this is a more open ended task that can involve a range of numbers, fractions, decimals and negatives
overall rules can be sought (they are easy to find)
and proved

a powerpoint is here

a similar task (or an extension) is when the red numbers are the average of those either side of them
the powerpoint for this is here






first extension: find the invariant number for a particular set of 3 totals

second extension: what happens if the totals are in sequence (same difference sequences)?

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