Week 16 of the count up

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Week 16 of the count up and here’s a maths problem given as homework to 9 year olds in Taiwan. Never mind “Mind Your Decisions”, which is where this comes from, this one will blow your mind.

Why is this a countUP and not acountDOWN? 

Week 15 of the count up

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Week 15 of the count up and here’s another puzzle from Mind Your Decisions. And since this is week 15, here’s a hint. The answer is NOT 15.

 

Why is this a countUP and not acountDOWN?

Week 14 of the count up

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Week 14 of the count up and here’s something different from a YouTube mathematician called Presh Talwalker whose YouTube channel is called Mind Your Decisions. In this video he shows you a neat way to work out the radius of a heart.

Why is this a countUP and not acountDOWN?