- Back Yard Trees - Judy Ann Brown
Pre-Algebra, difficulty level 4. How many different quadrilaterals can be formed by joining any four of the nine trees?
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- The Bracelet Craze - Leigh Nataro
Discrete Math, difficulty level 3. Find how many ways beads can be arranged around a bracelet.
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- Coding Conundrums - Mary DeYoung & class
Pre-Algebra, difficulty level 2. Explore encoding and decoding in this cipher puzzle.
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- Deranged Uncle Al - Ethel Breuche
Discrete Math, difficulty level 3. Deranged Uncle Al allows each of his four nephews to select a toy, and buys them the four toys. How many different ways can he give each of the boys a toy so that no boy receives the toy he actually selected?
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- Even Number Puzzle - Judy Ann Brown
Pre-Algebra, difficulty level 3. How many even four-digit whole numbers exist such that the thousands digit is odd, and all four digits are different?
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- Flipping Over Pennies - Judy Ann Brown
Pre-Algebra, difficulty level 3. How many equally likely outcomes are there when flipping 10 coins?
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- Homework-Free Fridays - Claire Mead
Math Fundamentals, difficulty level 2. How many different ways can Donna roll the blue and red dice to win a weekend free of
homework?
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- Intersecting Circles - Annie Fetter
Geometry, difficulty level 3. What is the maximum number of times six circles of the same size can intersect? In other words, draw six circles of the same size on a piece of paper - what is the maximum number of intersections your drawing can have?
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- Kwae - Suzanne Alejandre
Pre-Algebra, difficulty level 3. Determine the number of kwae that can be made.
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- Locker Combinations - Judy Ann Brown
Pre-Algebra, difficulty level 4. In this counting problem you will need to determine the total number of possible locker combinations.
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- Payment in Kind - Lisa Lavelle (adapted)
Elementary, difficulty level 3. Determine the spouses of three kind women based on the details of their inheritance.
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- Pegging Possibilities - Michael Urbut
Pre-Algebra, difficulty level 2. Explore the number of possible arrangements of pegs in this logic game.
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- Pondering Palindromes - Mary DeYoung & class
Math Fundamentals, difficulty level 1. Explore 4-digit palindromes and find something else they have in common.
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- Puzzling Puzzle Pieces - Lisa Lavelle
Math Fundamentals, difficulty level 2. Explore the ways 108 puzzle pieces can be arranged.
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- Seating Arrangements - Judy Ann Brown
Pre-Algebra, difficulty level 3. Four new students arrive in Mrs. Brown's homeroom. After a few minutes she turns to them and says, "There are 1680 ways
that you can sit in the empty seats." How many empty seats are there in the room?
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- Seating Arrangements - Leigh Nataro
Discrete Math, difficulty level 3. How many different ways can three people sit at a 10-seat counter so that there are empty seats between them?
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- The Straggler Shakes Hands - Melissa Kennedy, Susan Rose, Ethel Breuche
Algebra, difficulty level 3. There were one hundred forty-one handshakes in all. How many people did the straggler know? This puzzle involves a quadratic expression and triangular numbers.
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- Totolospi - Suzanne Alejandre
Pre-Algebra, difficulty level 2. Calculate the probability of advancing on a toss when playing the game
Totolospi.
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- Trick-or-Treat Route - Judy Ann Brown
Pre-Algebra, difficulty level 4. Which of the many possible routes should the Anderson children take on their Halloween trek?
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- Video Trading - Joyce Hoellein & Class
Math Fundamentals, difficulty level 2. Determine the number of trades necessary for each of the 4-H members to see each of the video tapes.
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- Vinnie Valentine's Mix-Up - Leigh Nataro
Trig/Calc, difficulty level 4. What is the probability of getting exactly 10 out of 20 valentines to the correct person?
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- Welcome Back - Leigh Nataro
Discrete Math, difficulty level 3. Find the probability of spelling "Welcome Back" when cards with each letter are flipped over.
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- Where Should I Sit? - Judy Ann Brown
Middle School, difficulty level 3. On Monday three new students arrived in Mrs. King's homeroom... How many empty seats were there in Mrs. King's room?
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- World Series Champions - Leigh Nataro
Trig/Calc, difficulty level 3. How many ways could a baseball team win a World Series of n games if it must win a majority (one more than half) of the games played?
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