Number Sense
Math Puzzles
Number Sense
Number Sense
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All the People in the World
The world population is growing rapidly. At the same time, we are faced with global warming, destruction of rain forests . . . read more
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How Long Is the Coast of England
…asked mathematician Benoit Mandelbrot. Our math puzzle this month explores a related question. read more
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How Thick Does It Get?
This puzzle was suggested by Malcolm Gladwell's book The Tipping Point. read more
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Number Series
Can you figure out the patterns in several number series. read more
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Power to the Pedal!
Have you ever wondered whether the power of a bicycle could be harnessed to do useful work . . . read more
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Square Numbers
All these math puzzles are somewhat related to each other. read more
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The Great Soccer Ball Giveaway
The Seedonia National Soccer Team (the Seedies) made it to the final sixteen in World Cup Soccer for the first time . . . read more
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The Reward
The king of Seedonia was driving along a winding mountain road with his son. read more