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Continue to ChatMaths: Turning a Negative into a Positive https://blogs.glowscotland.org.uk/glowblogs/udavgeddes/2019/01/23/maths-turning-a-negative-into-a-positive-no-pun-intended/
Maths: Turning a Negative into a Positive https://blogs.glowscotland.org.uk/glowblogs/udavgeddes/2019/01/23/maths-turning-a-negative-into-a-positive-no-pun-intended/