By Michael A. DiSpezio

Here are adequate difficult puzzles to check your psychological powers for hours and hours. do this endless array of puzzles, demanding situations, funky proof, issues to construct, bizarre riddles, and different conundrums. a few are outdated favorites that by no means fail to stump, others are absolutely new, yet all promise hours of enjoyable. each should be accomplished with a pencil, pen, or a few low-cost fabrics round the condo. ninety six pages, a hundred and five b/w illus., five 3/8 x eight 1/4.

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Critical Thinking Puzzles

Listed here are adequate difficult puzzles to check your psychological powers for hours and hours. do this endless array of puzzles, demanding situations, funky evidence, issues to construct, bizarre riddles, and different conundrums. a few are previous favorites that by no means fail to stump, others are absolutely new, yet all promise hours of enjoyable. each one could be accomplished with a pencil, pen, or a few low-cost fabrics round the condominium.

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Answer on page 83. 39 Snake Spread ••• These hungry snakes are swallowing each other. Since they began this odd dining experience, the circle they formed has gotten smaller. If they continue to swallow each other, what will eventually happen to the circle of snakes? Answer on page 83. Falcon Flight ••• Two bicyclists are situated 60 miles apart. One has a falcon on his shoulder. The bicyclists start riding toward each other at the same time, both maintaining a constant speed of 30 mph. The moment they begin, the falcon flies off the first cyclist's shoulder and towards the other.

38 Tipping the Scales ••• What whole animal(s) must be added to balance the fourth scale? • Answer on page 83. 39 Snake Spread ••• These hungry snakes are swallowing each other. Since they began this odd dining experience, the circle they formed has gotten smaller. If they continue to swallow each other, what will eventually happen to the circle of snakes? Answer on page 83. Falcon Flight ••• Two bicyclists are situated 60 miles apart. One has a falcon on his shoulder. The bicyclists start riding toward each other at the same time, both maintaining a constant speed of 30 mph.

Fold and cut one of the pieces to get a square and right triangle. (Sections IV and V). d 6. Fold and cut the other piece like this (Sections VI and VII). 61 With your seven pieces, try and create these figures. Answers on pages 91-92. 62 Fractured Farmland ••• While flying over farmland, a pilot notices the rectan­ gular shape of the fields below. She sketches the lines that divide the fields. When she returns to the airport, she wonders how many different rectangles can be formed by the lines drawn below?

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