Algebraic Thinking
Math Puzzles
Algebraic Thinking
Algebraic Thinking
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Building With Bricks
An architect is building a series of pyramids to use in landscaping a fancy garden.
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Can 2 = 1?
Here’s our "proof..."
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Getting There and Back
Can you determine the difference in air speeds when flying into and out of the wind? Try this puzzle and see.
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Let's Shake on That!
Ramanujan is having a party. Since his father and mother named him after a famous Indian mathematician of the 20th century, Srinivasa Ramanujan, he always likes to have mathematical puzzles at his parties.
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More Magic Squares
The ancient mathematical puzzles called magic squares have many variations.
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Magic Stars
We have explored magic squares, puzzles in which we tried to arrange all the numbers from 1 to 9 in the boxes of a 3 x 3 square so that all rows, columns and diagonals add up to the same number. Now we look at magic stars.
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On a Collision Course
In this puzzle we challenge you to figure out how close the two missiles below would be right before collision.
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Painting Cubes
Puzzles ‘R’ Us is a small company that makes three-dimensional puzzles and sells them over the Internet.
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Seats at the Table or "No Function Too Large"
A catering company specializes in dinners for large groups. They advertise: that “We can seat your entire party at one table; no function is too large for us."
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Telling Time
A clock is a complicated measuring device. There are two scales superimposed on each other, one for hours and one for minutes.
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Telling Time With Fuses
You have some fuses, each of which burns for exactly one hour, but unevenly; that is half a length of fuse does not necessarily burn for half an hour.
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The Speed of the Spiders
How fast can our spider climb the wall? Find out in these math puzzles.
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The Tortoise and the Hare . . . Revisited
There’s an old story about a race between a tortoise and a hare. The hare knew he was much faster than the tortoise.