 Count to Ten?  Leigh Nataro
Trig/Calc, difficulty level 3. Use the given clues to determine the base system for counting used by people of the planet Torus.
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 An Expanding Circle  Steve Risberg
Algebra, difficulty level 2. When the radius of a circle increases by 6 inches, the area increases
by 125%. Find the original radius.
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 Flying Off the Shelves  Steve Risberg
Algebra, difficulty level 1. The new soundtrack album from the movie Ray is selling like hotcakes!
Given some information about the sales over three days at Tip Top
Tunes, can you determine how many CDs sold per day?
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 Moving the Lincolns  Leigh Nataro
Discrete Math, difficulty level 4. How many moves are needed to turn a triangular array of pennies upside down?
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 Nice Shot, Robin Hood!  Sara Aucoin, Marcie Sawyer, Pattie Draper
Trig/Calc, difficulty level 2. Answer some questions about the flight of Robin Hood's arrow.
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 Polynomial Puzzler  Steve Risberg
Algebra, difficulty level 2. Given four polynomials, find an expression that uses each of them
once, involves multiplication, addition and subtraction, and results
in a given binomial when simplified.
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 A ProductPlus1  Terry Trotter
Algebra, difficulty level 3. The product of any four consecutive integers, increased by one, is always a square number. Give at least three instances of that statement and prove that this will always occur by finding an algebraic expression for that
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 Reciprocals  Steve Risberg
Algebra, difficulty level 3. Explore the numeric difference between numbers and their reciprocals.
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 The Straggler Shakes Hands  Melissa Kennedy, Susan Rose, Ethel Breuche
Algebra, difficulty level 3. There were one hundred fortyone handshakes in all. How many people did the straggler know? This puzzle involves a quadratic expression and triangular numbers.
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 The Great Northern Triathlon  Steve Risberg
Algebra, difficulty level 2. Sven skis, skates, and snowshoes in the winter triathlon. Use the
given information to determine how fast he snowshoes.
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 Three Consecutive Integers  Annie Fetter
Algebra, difficulty level 1. Use a variable to explain an interesting relationship that can be found between three consecutive integers.
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 Throw It Down!  Steve Risberg
Algebra, difficulty level 3. Kelvin leaps high to dunk a basketball. How long are his hands high
enough above the rim for him to dunk?
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 TrickorTreat Box  Terry Trotter
Algebra, difficulty level 1. Harvey and his classmates make trickortreat boxes in math class and use a special formula to find the volumes.
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 Where Did It Come From?  Leigh Nataro
Trig/Calc, difficulty level 3. Find the three fractions that produce a given sum. What is a unit fraction?
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 Wreck Tangle  Steve Risberg
Algebra, difficulty level 2. When the width of a given rectangle is tripled and the length is
doubled, the perimeter increases by 92 cm. Find the area of the
original rectangle.
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