2012-13 Problem of the Week Calendar

Links to the Packets, suggested Activity Series strategies, and Online Resources (and more!) are available from the individual problem page (linked from the titles below). Access to the problems is restricted to users who have subscribed to one of our membership services. More information is available on our Pricing Guide.

Mentor groups (indicated by X) make it possible for more students to receive free mentoring than is normally possible. This list is updated throughout the year.

* Students can submit to problems any time after they open. However, only solutions submitted before the next problem opens will be considered for inclusion in the posted solutions for the Math Fundamentals, Pre-Algebra, Algebra, and Geometry problems.

Teachers with Full Memberships or higher can also view the problems from the 2011-12 academic year.

[ Primary | Math Fundamentals | Pre-Algebra | Algebra | Geometry | Trig/Calc ]

Primary

  Submissions
Open
Problem Mentor
Group
 
  Aug 27 Add or Subtract?    
  Sep 10 Trolls and Dogs    
  Sep 24 Lining Up for Lunch    
  Oct 8 Birthday Cake    
  Oct 22 Bat-tastic!    
  Nov 6 Money Matters    
  Nov 21 Clean-Up Time    
  Dec 3 Pinecones    
  Dec 17 Winter is Coming!    
  Jan 7 Counting Cars    
  Jan 21 How Far Will Taylor Run?    
  Feb 4 Counting Shells    
  Feb 18 Warming Up!    
  Mar 4 The Van Ride    
  Mar 18 The Snake's Next Meal    
  Apr 1 Yummy Gummy Bears    
  Apr 15 Ants on a Bun    
  Apr 29 Goldfish Galore    
  May 13 Bubblegum    
  May 27 Ice Cream Party    
 

Summer Problems

  Jun 10 How Many Berries Did I Eat?    
  Jun 24 Pizza Night    
  Jul 8 The Eagle and the Bear    
  Jul 22 Clowning Around    
  Aug 5 Charlie's Gumballs    
 

Math Fundamentals

  Submissions
Open
Problem Mentor
Group
Solutions
Posted
  Aug 20 Pocket Change   Sep 7
  Sep 3 Eating Grapes   Sep 21
  Sep 17 Baseball Cards   Oct 5
  Oct 1 Tangrams X Oct 19
  Oct 15 Counting Cats and Dogs X Nov 2
  Oct 29 Emmy's Action Figures X Nov 16
  Nov 14 Miracle Miranda and the Mascot   Nov 30
  Nov 26 Shopping at the School Store   Dec 14
  Dec 10 Horsin' Around   Dec 28
  Dec 24 Chelsea's Number Puzzle   Jan 18
  Jan 14 Sharing Smelt   Feb 1
  Jan 28 Dragons and Tigers and Hares, Oh My!   Feb 15
  Feb 11 A Dicey Situation   Mar 1
  Feb 25 The Teddy Bears' Banquet   Mar 15
  Mar 11 Marble Mayhem X Mar 29
  Mar 25 Growing Worms   Apr 12
  Apr 8 Siblings X Apr 26
  Apr 22 Sheila's Shelves X May 10
  May 6 Crossing the River with Ogres   May 24
  May 20 Something Fishy   Jun 7
 

Summer Problems

  Jun 3 Campfire Camaraderie   Jun 21
  Jun 17 A Larger Garden   Jul 5
  Jul 1 Pizza Dough   Jul 19
  Jul 15 Grampa Joe's Great Grandpets   Aug 2
  Jul 29 Cat Walk   Aug 16
  Aug 12 Filling Beauty's Seats   Aug 30
 

Pre-Algebra

  Submissions
Open
Problem Mentor
Group
Solutions
Posted
  Aug 27 Back-to-School Shopping   Sep 14
  Sep 10 Measuring Melons   Sep 28
  Sep 24 Sketchley Names that Negative   Oct 12
  Oct 8 Baking Blackberries   Oct 26
  Oct 22 Counting Chicken Wings   Nov 9
  Nov 6 Pumpkin Carving for Charity   Nov 23
  Nov 21 The World's Largest Popcorn Ball   Dec 7
  Dec 3 Card Covers   Dec 21
  Dec 17 Wondering about Water   Jan 11
  Jan 7 Symmetry Surprise   Jan 25
  Jan 21 Richard's Rides   Feb 8
  Feb 4 Days on Other Planets X Feb 22
  Feb 18 Geo in Jeopardy   Mar 8
  Mar 4 Totolospi   Mar 22
  Mar 18 Heavy Hoisting   Apr 5
  Apr 1 Postal Rates X Apr 19
  Apr 15 Photo Wall   May 3
  Apr 29 Train Travel   May 17
  May 13 Downloading Duel   May 31
  May 27 Apple Picking   Jun 16
 

Summer Problems

  Jun 10 Scale Stepping   Jun 28
  Jun 24 Change Woes   Jul 12
  Jul 8 Timber!   Jul 26
  Jul 22 Getting Your Kicks on Route 66   Aug 9
  Aug 5 Sizing Up Sequoias   Aug 23
 

Algebra

  Submissions
Open
Problem Mentor
Group
Solutions
Posted
  Aug 20 Operation Warm Up   Sep 7
  Sep 3 Filling Glasses   Sep 21
  Sep 17 Eating Contest   Oct 5
  Oct 1 Sierpinski Stages   Oct 19
  Oct 15 To B or Not To B   Nov 2
  Oct 29 Voter Turnout   Nov 16
  Nov 14 A Championship Season   Nov 30
  Nov 26 How Many Ties?   Dec 14
  Dec 10 Two By Canoe   Dec 28
  Dec 24 A Slippery Slope   Jan 18
  Jan 14 Symbol Logic   Feb 1
  Jan 28 Pressed for Time   Feb 15
  Feb 11 A Phone-y Deal X Mar 1
  Feb 25 Swapping Marbles   Mar 15
  Mar 11 Polynomial Power X Mar 29
  Mar 25 Fraction Debate   Apr 12
  Apr 8 The Bouncing Ball X Apr 26
  Apr 22 Field Trip   May 10
  May 6 The ABCs of Exponents   May 24
  May 20 Factor Bingo   Jun 7
 

Summer Problems

  Jun 3 An Expanding Circle   Jun 21
  Jun 17 The Joke   Jul 5
  Jul 1 Marathon Mitch   Jul 19
  Jul 15 Bowling Buddies   Aug 2
  Jul 29 Hiking Mount Hood   Aug 16
  Aug 12 Count Your Change   Aug 30
 

Geometry

  Submissions
Open
Problem Mentor
Group
Solutions
Posted
  Aug 27 Divided Rectangle   Sep 14
  Sep 10 Triple Tango   Sep 28
  Sep 24 Plane and Simple?   Oct 12
  Oct 8 Triangle in Motion?   Oct 26
  Oct 22 A Minor Problem   Nov 9
  Nov 6 The Shortest Possible Side   Nov 23
  Nov 21 Pythagorean Circles   Dec 7
  Dec 3 Circle Derby   Dec 21
  Dec 17 Making the Biggest Triangle   Jan 11
  Jan 7 Two Rectangles   Jan 25
  Jan 21 Building a Regular Hexagon   Feb 8
  Feb 4 Making a Six-Pointed Star X Feb 22
  Feb 18 Regional Ratios X Mar 8
  Mar 4 Snail's Trail X Mar 22
  Mar 18 Pondering Pantographs X Apr 5
  Apr 1 Fix This Picture X Apr 19
  Apr 15 Flying High   May 3
  Apr 29 A Circle Inscribed in an Isosceles Triangle   May 17
  May 13 Seeing Stars   May 31
  May 27 Off on a Tangent   Jun 16
 

Summer Problems

  Jun 10 Dendrochronology   Jun 28
  Jun 24 Measuring the Matterhorn   Jul 12
  Jul 8 Folding a Piece of Paper in Thirds   Jul 26
  Jul 22 Where's Juanita Walking?   Aug 9
  Aug 5 Square in a Right Triangle   Aug 23
 

Trig/Calc

  Submissions
Open
Problem Mentor
Group
Solutions
Posted
  Aug 20 Building Boxes   Sep 7
  Sep 3 Goose Bay Mountain   Sep 21
  Sep 17 Costly Cable   Oct 5
  Oct 1 Count Your Seinneps   Oct 19
  Oct 15 World Series Champions   Nov 2
  Oct 29 Environmentally Friendly   Nov 16
  Nov 14 Let's Measure the Earth   Nov 30
  Nov 26 Count to Ten?   Dec 14
  Dec 10 Building Bridges   Dec 28
  Dec 24 The General Box Company   Jan 18
  Jan 14 Cooling Colas   Feb 1
  Jan 28 Cutting the Cookie   Feb 15
  Feb 11 A Deviation from the Average   Mar 1
  Feb 25 Don't Be Late for Dinner   Mar 15
  Mar 11 Basketball Angles   Mar 29
  Mar 25 Doughnut Dilemma   Apr 12
  Apr 8 Fishing on the Bay   Apr 26
  Apr 22 Around the Corner   May 10
  May 6 Job Interview at the Can-Can Company   May 24
  May 20 Your Interview Questions Is...   Jun 7
 

Summer Problems

  Jun 3 The Seal of Dalvek   Jun 21
  Jun 17 Let Me Guess Your Number   Jul 5
  Jul 1 Irregular Acreage   Jul 19
  Jul 15 Let the Sunshine In   Aug 2
  Jul 29 Football Volume   Aug 16
  Aug 12 How Large is the Yard?   Aug 30
 

* Students can submit to problems any time after they open. However, only solutions submitted before the next problem opens will be considered for inclusion in the posted solutions for the Math Fundamentals, Pre-Algebra, Algebra, and Geometry problems.



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