One afternoon, Lori Anderson and her 7-year-old, Lindsey, spotted a small maple tree in La Mirada, California. Anderson asked her daughter how many leaves she thought were on the tree. Lindsey’s guess ...

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Now as an adult in the banking industry, Ms Devendranath, 32, can still smash through 80 sums in just one minute – and is encouraging kids all over Australia to embrace maths and follow in her ...