(10/13/97)
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MathMagic Cycle 25: Level K-3 Regular
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Feet and heads at the Zoo
The El Paso Zoo is one of the many nice attractions that this city in west
Texas has. Since I don't have time to play tourist, every time someone
from out of town comes to visit and brings their kids, I happily take them
to the zoo (I sometimes think I have more fun than they do!)
Recently I was "dragging" this young friend from cage to cage, and he was
getting tired. At one point he told me "Hey - I just counted 36 feet" - We
were looking at an enclosure that has zebras and ostriches together, so,
instead of taking the hint, I took a minute and counted 13 heads. We took
a short break to figure out how many of each animal there were, and we guessed right!
Can you and your NTP figure out a way of coming up with the answer?
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MathMagic Cycle 25: Level K-3 Advanced
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vertex
-> C A triangular pencil holder is marked as shown. When it is "rolled"
/ \ once to the right, A becomes the vertex and B-C the base. Use a
A - B table like the one shown, and try to discover patterns to determine
-------which letter will be the vertex after 10, 17, 23 and 30 rolls.
Table: # rolls | vertex | base (HINT: You may need to look at
-------+--------+------- a multiplication table for 3)
0 | C | A-B
1 | A | B-C
... | ... | ...
Remember to write down your steps and conclusions.
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Good luck
MrH