 Accuracy Please  Judy Ann Brown
PreAlgebra, difficulty level 3. Considering precision, accuracy, and appropriateness in finding the volume of a cone.
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 Addition in the Land of Make Believe  Leigh Nataro
Discrete Math, difficulty level 3. For any base b, show that if you subtract the sum of its digits from a number, the result is divisible by b1.
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 Anderson's Pumpkin Patch  Teaching the Young Learner Group and Lisa Lavelle
Math Fundamentals, difficulty level 2. How many students are there in Ms. Juncos's fourth grade class?
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 Anh's Code  Annie Fetter
PreAlgebra, difficulty level 2. Decode the five mathematical operations symbolized in three equations, then evaluate an expression.
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 Anjelica's Very Odd Magic Sweater  Cynthia Lanius, Suzanne Alejandre
PreAlgebra, difficulty level 3. Find the shortcut Angelica's mother might have used to calculate the
number of dimes.
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 Birthday Beach Bash  Lisa Lavelle
Math Fundamentals, difficulty level 3. Help determine how many balloons were needed for party favors at the end of this celebration.
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 Birthday Probability  Kristina Lasher & Lisa Lavelle
Math Fundamentals, difficulty level 3. What is the likelihood that someone is born on an even or odd day of
the month? Are you more likely to be born on a prime number day or a
multiple of 3?
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 Borrowed Books  Teaching the Young Learner Group
Elementary, difficulty level 2. Determine the number of books in the borrowing library created by three friends.
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 Building a Snow Statue  Judy Ann Brown
PreAlgebra, difficulty level 3. Determine the height of a snow statue using the given information.
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 Calculator Double Vision  Lisa Lavelle
Elementary, difficulty level 2. Enter a 3digit number twice on a calculator and use division to get the original number.
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 Canadian Soccer  Judy Ann Brown
PreAlgebra, difficulty level 2. Find the distance a player runs to complete three "Double V" laps.
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 Can This Be Done?  Judy Ann Brown
Middle School, difficulty level 1. Find the largest sixdigit number that can be written following two simple rules.
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 Can You Find My Numbers?  Roya Salehi
PreAlgebra, difficulty level 3. I have eight numbers in my list. Use the clues to find my numbers.
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 Chicken Little's Eggs  Jody Newman
Elementary, difficulty level 3. How many eggs did Chicken Little have in her basket at the start of her trip to town?
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 The Chocolate Allergy Revelation  Antiquity (Steve Earth)
Math Fundamentals, difficulty level 5. Use metareasoning to deduce the ages of three people based on a product, a sum, and a seemingly irrelevant third piece of information.
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 The Complex Apartment Complex  Judy Ann Brown
PreAlgebra, difficulty level 2. Find the number of apartments in a new building if each floor has twice as many apartments as the floor above.
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 Darlene's Dart Board  Claire Mead
Math Fundamentals, difficulty level 3. How many darts does it take to win on Darlene's dart board?
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 A Day at the Arcade  Judy Ann Brown
Middle School, difficulty level 2. The 25cent token dispensing machine only accepts quarters and half dollars one at a time. How many different combinations of coins, using quarters (q) and half dollars (h), are there to purchase the desired number of
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 Dollar Dealing  Suzanne Alejandre and Lillian Ray
PreAlgebra, difficulty level 2. How much money did Hector and Larissa each have?
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 Do you listen to WMTH or WALG?  Judy Ann Brown
PreAlgebra, difficulty level 4. Each week listeners switch radio stations. Predict the longterm distribution of listeners for each station.
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 Duke is Missing  Judy Ann Brown
PreAlgebra, difficulty level 3. Duke's head is 6 inches long, his tail is as long as his head plus half the length of his body, and his body is as long as the head and tail combined. How long is Duke?
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 Erika's Rock Collection  Elisabeth and Stephen Baseman and Chamberlain
Math Fundamentals, difficulty level 2. Find out how many rocks Erika has collected over the years.
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 Even Number Puzzle  Judy Ann Brown
PreAlgebra, difficulty level 3. How many even fourdigit whole numbers exist such that the thousands digit is odd, and all four digits are different?
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 Five Digits of Fun  Lisa Lavelle
Math Fundamentals, difficulty level 4. Find a fivedigit number based on these clues.
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 Flipping Over Pennies  Judy Ann Brown
PreAlgebra, difficulty level 3. How many equally likely outcomes are there when flipping 10 coins?
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 Four Playful Mathematicians  inspired by Maria Fung's class at Western Oregon
Math Fundamentals, difficulty level 2. Follow the clues to help the four playful mathematicians return the lost watch.
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 The Graduating Class  Judy Ann Brown
PreAlgebra, difficulty level 3. Use the information about students with different grades to determine the number of students in Mrs. Smith's class.
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 Grandmother's Birthday Party  Judy Ann Brown
Middle School, difficulty level 1. Alice and Jessica are writing invitations for a surprise birthday party for their grandmother. Determine how many invitations they have written?
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 Guess My Number If You Can!  Judy Ann Brown
PreAlgebra, difficulty level 4. Use division clues to reveal the secret number.
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 Happy New Year!  Judy Ann Brown
PreAlgebra, difficulty level 4. A puzzle for the new year: how is the grid designed?
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 Heidi's Hometown  Claire Mead
Math Fundamentals, difficulty level 2. How many people lived in Heidi's hometown at the end of 2007?
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 Holiday Ornaments  Claire Mead
Math Fundamentals, difficulty level 3. How many holiday ornaments did each girl's mother make?
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 Horton's Clover Hunt  Lisa Lavelle
Math Fundamentals, difficulty level 4. Find out how fast Horton had to work picking clovers.
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 How Big?  Judy Ann Brown
Middle School, difficulty level 1. The dimensions of my classroom are consecutive multiples of ten. Find the dimensions of the room.
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 I Know a Secret!  Judy Ann Brown
Middle School, difficulty level 2. On the first day I told two friends my secret.They each told two friends. How long until 100 people know the secret?
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 I Like to Palindrive!  Kristina Lasher
Math Fundamentals, difficulty level 3. How many palindromic numbers will appear on Kristina's odometer in October, 2003?
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 It's an open and shut case! Or is it?  Lisa Lavelle
Elementary, difficulty level 3. A Razzle Dazzle Elementary School locker problem.
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 Jellybean Fractions  Lisa Lavelle
Elementary, difficulty level 2. Determine good and bad choices in playing the Jellybean Fractions Game.
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 Kate's Combination  Suzanne Alejandre
PreAlgebra, difficulty level 2. Find Kate's locker combination using mathematical clues. Is there more than one possibility?
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 Lucky Lollipops  Suzanne Alejandre & Maria Fung and her students
PreAlgebra, difficulty level 3. Find the number of lollipops Logan the Leprechaun gives away using his "lucky" method.
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 The Math Club Holiday Party  Judy Ann Brown
Middle School, difficulty level 2. The Math Club is having a holiday party. If the presents are opened in 5 minute intervals starting at 1:00 p.m. the last gift will be opened starting at 5:35 p.m. How many club members are there?
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 Mathematics Club Membership  Judy Ann Brown
Middle School, difficulty level 2. Find the number of students in the Mathematics Club using the given information.
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 Missing Pages  Claire Mead
Math Fundamentals, difficulty level 2. Drew's math book is missing a page. What are the page numbers on the missing page?
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 Money in the Bank  Judy Ann Brown
Middle School, difficulty level 2. All but seven of the 49 coins in my bank are quarters and nickels. How much money could I have?
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 Monmouth Mountain Bikes  Kristina Lasher
Math Fundamentals, difficulty level 1. How many mountain bikes will have the highest level of safety testing?
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 Mr. Carmel's Party Plan  Judy Ann Brown
PreAlgebra, difficulty level 2. Help Mr. Carmel's class earn an ice cream party by counting the number of possible sundaes.
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 Mr. Lincoln's Line *  Claire Mead
Math Fundamentals, difficulty level 3. Find out who's wearing glasses and carrying lunch boxes in Mr.
Lincoln's lunch line.
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 Odd (and Even) Dates  Lisa Lavelle
Math Fundamentals, difficulty level 1. Can you figure out these curious dates?
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 Palindrome Day  Judy Ann Brown
PreAlgebra, difficulty level 2. How many Palindrome Days are there in a year?
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 Pi Day  Let's Eat Cake!  Judy Ann Brown
PreAlgebra, difficulty level 3. In honor of Pi Day we will be comparing the volumes of slices taken from round and rectangular cakes.
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