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Maths on a Smartphone

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I recently gave a talk about doing Maths on a smartphone.  I chose four of my favourite apps.  I like these apps because in all of them there are opportunities to think and work mathematically, not just passively observe prepared material. MyScript Calculator MyScript is really easy to use – you just write the calculations with your finger. Android: https://play.google.com/store/apps/details?id=com.visionobjects.calculator&hl=en_GB iOS: https://itunes.apple.com/gb/app/myscript-calculator-handwriting/id578979413?mt=8 Problem to try: What’s the maximum product of a set of positive numbers that sum to 19? Desmos Desmos is a very user-friendly graphing calculator.  In my experience most people find the interface intuitive and are able to work with it very quickly. Android: https://play.google.com/store/apps/details?id=com.desmos.calculator&hl=en_GB iOS: https://itunes.apple.com/gb/app/desmos-graphing-calculator/id653517540?mt=8 Problem to try: What’s the effect