Problem... Sheep

#Factors  #Area #Ratio #PrimeFactors #Combinations #Symmetry #MathsWithSheep

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Problem... Subfactorial

#Permutations #Factorial #Subfactorial #Derangements

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• For more see this from James Tanton.

Problem... Lego

#Probability #Combinations #Permutations #nCr #nPr
#Binomial #Venn #SimpsonsMaths #LegoMaths

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• See this about the Lego Ad campaign.

Problem... Play Your Cards Right

#Probability #ConditionalProbability #BruceForsyth

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• Watch this episode from 1996:

Problem... Tiles

#Symmetry #Reflection #Rotation

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• Reflective symmetry, from Don Steward.
• Rotation symmetry, from Don Steward.

Problem... Balloons

#Generalisation #MathsWithBalloons

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Problem... Logical Deomnstrator

#Logic #Fractions #Sets #SetNotation #Venn #Probability
#CharlesStanhope #LogicalDemonstrator #MathsHistory

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• See this on Stanhope's Deomnstrator.
• Stanhope's Demonstrator in the Science Museum collection.

Problem... Squares in Squares

#Fractions #MultiplyingFractions #Ratio #Area #MathsAndArt

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• Adapted from this by Don Steward.
• See more of Jean-François Correvon's art here.

Problem... Fractions of Areas

#Fractions #CancellingFractions #MultiplyingFractions #Area #CompundArea

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