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Suppose that in a bag of marbles, all the ones that -

are rough to feel, have a blue colour on them;

sparkle when 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 - J?

10 marbles

Imagine you are making marbles. What colours must be put on marbles that -

sparkle when rolling but are dark inside?

are cold to touch and feel rough?

are cold, but sparkle when rolling?

What colour(s) could be on a marble that -

is cold?

sparkles when rolling?

What colours would you find on a cold, sparkly, dark and rough marble?