201314 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, and Geometry problems.
Teachers with Full Memberships or higher can also view the problems from the 201213 academic year.
[ Primary  Math Fundamentals  PreAlgebra  Algebra  Geometry  Trig/Calc ]
Primary  
Submissions Open 
Problem  Mentor Group 

Aug 19  Playground Fun  
Sep 2  Picnic at the Park  
Sep 16  Batting Order  
Sep 30  Play Date  
Oct 14  Count Them Up  
Oct 28  How Tall is Your Tower?  
Nov 11  Donut Sale  
Nov 25  Let's Play Ball!  
Dec 9  Flower Fun  
Dec 23  Drumsticks  
Jan 13  Counting Gumballs  
Jan 27  Jordan's Jobs  
Feb 10  Model Car Collection  
Feb 24  Counting Comics  
Mar 10  Field Day  
Mar 24  Baby Birds  
Apr 7  Ice Cream Sandwiches  
Apr 21  Picking Flowers  
May 5  Problem 19  
May 19  Problem 20  
Math Fundamentals  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 26  Imogene the Imp  Sep 13  
Sep 9  Elizabeth's Cookies  Sep 27  
Sep 23  Crack the Code  Oct 11  
Oct 7  You Think Your Teacher is Tough!  Oct 25  
Oct 21  Charlene Goes Shopping  Nov 8  
Nov 4  Feathers and Fur  Nov 22  
Nov 18  Movie Line Madness  Dec 6  
Dec 2  Lighting the Menorah  Dec 20  
Dec 16  Holiday Ornaments  Jan 10  
Jan 6  Taking Tolls  Jan 24  
Jan 20  Super Deal Salsa  Feb 7  
Feb 3  How Old Is Dad?  Feb 21  
Feb 17  A Million in Time  Mar 7  
Mar 3  March Madness!  Mar 21  
Mar 17  Moons, by Jove!  Apr 4  
Mar 31  Filling the Freezer  Apr 18  
Apr 14  Monmouth Mountain Bikes  May 2  
Apr 28  Problem 18  May 16  
May 12  Problem 19  May 30  
May 26  Problem 20  Jun 13  
PreAlgebra  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 19  Drama Dollars  Sep 6  
Sep 2  Peeling Potatoes  Sep 20  
Sep 16  Lee's Lawn Chair  Oct 4  
Sep 30  The Complex Apartment Complex  Oct 18  
Oct 14  Buying Cola  Nov 1  
Oct 28  Membership Boom!  Nov 15  
Nov 11  Car Rental Quandry  Nov 29  
Nov 25  Covered Bridges  Dec 13  
Dec 9  Sharing Birthday Cake  Dec 27  
Dec 23  Bank Balances  Jan 17  
Jan 13  Money Maker?  Jan 31  
Jan 27  Kate's Combination  Feb 14  
Feb 10  Citius, Altius, Fortius  Feb 28  
Feb 24  Club Competition  Mar 14  
Mar 10  Lucky Lollipops  Mar 28  
Mar 24  Anjelica's Very Odd Magic Sweater  Apr 11  
Apr 7  Paving Stones  Apr 25  
Apr 21  Lemonade Fun  May 9  
May 5  Problem 19  May 23  
May 19  Problem 20  Jun 6  
Algebra  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 26  Mind Reading  Sep 13  
Sep 9  Eduardo's Equation Challenge  Sep 27  
Sep 23  Are You Ready for Some Football?  Oct 11  
Oct 7  Take Me Out to the Ballgame  Oct 25  
Oct 21  Apple Orchard  Nov 8  
Nov 4  From Here to There  Nov 22  
Nov 18  A Surprising Sequence  Dec 6  
Dec 2  Ration Ratios  Dec 20  
Dec 16  Texting 1, 2, 3  Jan 10  
Jan 6  Are You Positive?  Jan 24  
Jan 20  Line Logic  Feb 7  
Feb 3  Building a Bakery  Feb 21  
Feb 17  What Time Is It?  Mar 7  
Mar 3  Lettuce for Sale  Mar 7  
Mar 17  Triangle Possibilities  Apr 4  
Mar 31  Fraction Action!  Apr 18  
Apr 14  Marathon Mitch  May 2  
Apr 28  Problem 18  May 16  
May 12  Problem 19  May 30  
May 26  Problem 20  Jun 13  
Geometry  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 19  Visiting Friends  Sep 6  
Sep 2  What's the Angle?  Sep 20  
Sep 16  Congruent Rectangles  Oct 4  
Sep 30  The Folding Ruler  Oct 18  
Oct 14  Square Segments  Nov 1  
Oct 28  Well, Well, Well  Nov 15  
Nov 11  Ants Marching  Nov 29  
Nov 25  Dendrochronology  Dec 13  
Dec 9  Similar Perimeter  Dec 27  
Dec 23  Arranging Rectangles  Jan 17  
Jan 13  How Long is the Base?  Jan 31  
Jan 27  Trisecting a Square  Feb 14  
Feb 10  Is the Fair Fair?  Feb 28  
Feb 24  Whodunnit?  Mar 14  
Mar 10  A Picturesque Pythagorean Proof  Mar 28  
Mar 24  Triangle Transformation  Apr 11  
Apr 7  Precision Paper Folding  Apr 25  
Apr 21  A Carpenter's Trisection  May 9  
May 5  Problem 19  May 23  
May 19  Problem 20  Jun 6  
Trig/Calc  
Submissions Open 
Problem  Mentor Group 
Solutions Posted 

Aug 26  Making Money at the Movies  Sep 13  
Sep 9  Simple Signals  Sep 27  
Sep 23  Additional Signals  Oct 11  
Oct 7  Shipping Packages  Oct 25  
Oct 21  A Sprinkling of Dust  Nov 8  
Nov 4  Tangents and Slopes  Nov 22  
Nov 18  Let the Sunshine In  Dec 6  
Dec 2  Kite Construction  Dec 20  
Dec 16  A Holiday Card  Jan 10  
Jan 6  My Hot Chocolate is Too Hot!  Jan 24  
Jan 20  Five Golden Rings  Feb 7  
Feb 3  Be My Valentine  Feb 21  
Feb 17  How Large Is The Yard?  Mar 7  
Mar 3  Coordinateville  Mar 21  
Mar 17  The Oval Braided Rug  Apr 4  
Mar 31  Ellipse Areas  Apr 18  
Apr 14  Squares Inside Squares  May 2  
Apr 28  Problem 18  May 16  
May 12  Problem 19  May 30  
May 26  Problem 20  Jun 13  
* 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, and Geometry problems.