Problem Solving PuzzlesProblem-Solving and Number Sense Activities for Teachers and StudentsEver wonder how thick a folded piece of paper can get? Is it possible to calculate the length of the coast of England? Do you think you can use a bicycle to power household appliances? Try your hand at our number games to find your answers. Our number challenges are ideal for playing at home or in the classroom. |
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All the People in the World
In this activity, estimate how much land is available for each person in the world, based on the world's population.
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How Long Is the Coast of England
…How many segments do you need to measure a curved line? This puzzle provides an introduction to the world of fractals.
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How Thick Does It Get?
If you fold a piece of paper 50 times, how thick do you think it would be? Try our puzzle to find out.
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Number Series
Do you see patterns in a series of numbers? Try our number series and find as many patterns as you can.
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Power to the Pedal!
Attach a generator to a bicycle and you can make electricity. But is it enough to actually power a computer? The answer is here.
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Square Numbers
Learn all the tricks of square numbers in this series of puzzles.
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The Great Soccer Ball Giveaway
How many soccer balls does it take to fill a soccer field? With a little information about the field size and ball diameter, you can figure it out for yourself.
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The Reward
Which is more valuable, a set amount of money or an amount that starts small but doubles for each square of the checkerboard? Take a guess before you do the math.
