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'A Bag of Marbles' printed from http://nrich.maths.org/
Suppose that in a bag of marbles,
all the ones that -
are rough to
feel, have a blue colour on them;
rolling, have a red colour on them;
are cold to
touch, have a white colour on them;
are dark inside,
have a green colour on them.
What can you say about each of the marbles A -
Imagine you are making marbles.
What colours must be put on marbles that -
sparkle when rolling but are dark
are cold to touch and feel
are cold, but sparkle when
What colour(s) could be on a
sparkles when rolling?
What colours would you find on a
cold, sparkly, dark and rough marble?