201617 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 ) 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, PreAlgebra, Algebra, Geometry, and Trig/Calc problems.
Teachers with Full Memberships or higher can also view the problems from the 201516 academic year.
[ Primary  Math Fundamentals  PreAlgebra  Algebra  Geometry  Trig/Calc ]
Primary  
Submissions Open 
Problem  Mentor Group 

Aug 22  Soccer Madness  
Sep 5  Trail Mix  
Sep 19  Trading Card Price Tag  
Oct 3  Who Has More Apples?  
Oct 17  Ben's Ice Cream Cone  
Oct 31  Birthday at the Ballpark  
Nov 14  Bus Stop  
Nov 28  It's Showtime!  
Dec 12  Magic More Machine  
Dec 26  Making Shapes  
Jan 16  Pizza Predicament  
Jan 30  Snow Day!  
Feb 13  Problem 13  
Feb 27  Problem 14  
Mar 13  Problem 15  
Mar 27  Problem 16  
Apr 10  Problem 17  
Apr 24  Problem 18  
May 8  Problem 19  
May 22  Problem 20  
Math Fundamentals  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 15  Charlene Goes Shopping  Sep 2  
Aug 29  MiniMall Measurements  Sep 16  
Sep 12  Feathers and Fur  Sep 30  
Sep 26  Peanut Butter and Jelly  Oct 14  
Oct 10  Building the Fence  Oct 28  
Oct 24  Horsin' Around  Nov 11  
Nov 7  Miracle Miranda and the Mascot  Nov 25  
Nov 21  Let the Chips Fall...  Dec 9  
Dec 5  Catching Up!  Dec 30  
Dec 19  How Old is Santa Claus?  Jan 13  
Jan 9  HomeworkFree Fridays  Jan 27  
Jan 23  Counting Cats and Dogs  Feb 10  
Feb 6  The Big Balloon Blowup  Feb 24  
Feb 20  Jumping Rope  Mar 10  
Mar 6  Problem 15  Mar 24  
Mar 20  Problem 16  Apr 7  
Apr 3  Problem 17  Apr 22  
Apr 17  Problem 18  May 5  
May 1  Problem 19  May 19  
May 15  Problem 20  Jun 2  
PreAlgebra  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 22  Baking Blackberries  Sep 9  
Sep 5  Symmetry Surprise  Sep 23  
Sep 19  Photo Wall  Oct 7  
Oct 3  Stacking Wood  Oct 21  
Oct 17  Falling Leaves  Nov 4  
Oct 31  San Pedro Babies  Nov 18  
Nov 14  Card Covers  Dec 2  
Nov 28  Happy Thanksgiving  Dec 16  
Dec 12  A Holiday Gift for Grandmother Brown  Jan 8  
Dec 26  Counting Chicken Wings  Jan 20  
Jan 16  Totolospi  Feb 3  
Jan 30  Heavy Hoisting  Feb 17  
Feb 13  Problem 13  Mar 3  
Feb 27  Problem 14  Mar 17  
Mar 13  Problem 15  Mar 31  
Mar 27  Problem 16  Apr 14  
Apr 10  Problem 17  Apr 28  
Apr 24  Problem 18  May 12  
May 8  Problem 19  May 26  
May 22  Problem 20  Jun 9  
Algebra  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 15  Mind Reading  Sep 2  
Aug 29  Eduardo's Equation Challenge  Sep 16  
Sep 12  Are You Ready for Some Football?  Sep 30  
Sep 26  Take Me Out to the Ballgame  Oct 14  
Oct 10  Apple Orchard  Oct 28  
Oct 24  From Here to There  Nov 11  
Nov 7  A Surprising Sequence  Nov 25  
Nov 21  Ration Ratios  Dec 9  
Dec 5  Texting 1, 2, 3  Dec 30  
Dec 19  Are You Positive?  Jan 13  
Jan 9  Line Logic  Jan 27  
Jan 23  Building a Bakery  Feb 10  
Feb 6  What Time Is It?  Feb 24  
Feb 20  Lettuce for Sale  Mar 10  
Mar 6  Problem 15  Mar 24  
Mar 20  Problem 16  Apr 7  
Apr 3  Problem 17  Apr 22  
Apr 17  Problem 18  May 5  
May 1  Problem 19  May 19  
May 15  Problem 20  Jun 2  
Geometry  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 22  Divided Rectangle  Sep 9  
Sep 5  Triple Tango  Sep 23  
Sep 19  Plane and Simple?  Oct 7  
Oct 3  Triangle in Motion?  Oct 21  
Oct 17  A Minor Problem  Nov 4  
Oct 31  The Shortest Possible Side  Nov 18  
Nov 14  Pythagorean Circles  Dec 2  
Nov 28  Circle Derby  Dec 16  
Dec 12  Making the Biggest Triangle  Jan 8  
Dec 26  Two Rectangles  Jan 20  
Jan 16  Making a SixPointed Star  Feb 3  
Jan 30  Snail's Trail  Feb 17  
Feb 13  Problem 13  Mar 3  
Feb 27  Problem 14  Mar 17  
Mar 13  Problem 15  Mar 31  
Mar 27  Problem 16  Apr 14  
Apr 10  Problem 17  Apr 28  
Apr 24  Problem 18  May 12  
May 8  Problem 19  May 26  
May 22  Problem 20  Jun 9  
Trig/Calc  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 15  Making Money at the Movies  Sep 2  
Aug 29  Simple Signals  Sep 16  
Sep 12  Additional Signals  Sep 30  
Sep 26  Shipping Packages  Oct 14  
Oct 10  A Sprinkling of Dust  Oct 28  
Oct 24  Tangents and Slopes  Nov 11  
Nov 7  Let the Sunshine In  Nov 25  
Nov 21  Kite Construction  Dec 9  
Dec 5  A Holiday Card  Dec 30  
Dec 19  My Hot Chocolate is Too Hot!  Jan 13  
Jan 9  Five Golden Rings  Jan 27  
Jan 23  Be My Valentine  Feb 10  
Feb 6  How Large is the Yard?  Feb 24  
Feb 20  Coordinateville  Mar 10  
Mar 6  Problem 15  Mar 24  
Mar 20  Problem 16  Apr 7  
Apr 3  Problem 17  Apr 22  
Apr 17  Problem 18  May 5  
May 1  Problem 19  May 19  
May 15  Problem 20  Jun 2  
* 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, PreAlgebra, Algebra, Geometry, and Trig/Calc problems.