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 ) 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	Problem 19
	May 27	Problem 20
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		Oct 19
	Oct 15	Counting Cats and Dogs		Nov 2
	Oct 29	Emmy's Action Figures		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		Mar 29
	Mar 25	Growing Worms		Apr 12
	Apr 8	Siblings		Apr 26
	Apr 22	Sheila's Shelves		May 10
	May 6	Crossing the River with Ogres		May 24
	May 20	Problem 20		Jun 7
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		Feb 22
	Feb 18	Geo in Jeopardy		Mar 8
	Mar 4	Totolospi		Mar 22
	Mar 18	Heavy Hoisting		Apr 5
	Apr 1	Postal Rates		Apr 19
	Apr 15	Photo Wall		May 3
	Apr 29	Train Travel		May 17
	May 13	Problem 19		May 31
	May 27	Problem 20		Jun 16
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		Mar 1
	Feb 25	Swapping Marbles		Mar 15
	Mar 11	Polynomial Power		Mar 29
	Mar 25	Fraction Debate		Apr 12
	Apr 8	The Bouncing Ball		Apr 26
	Apr 22	Field Trip		May 10
	May 6	The ABCs of Exponents		May 24
	May 20	Problem 20		Jun 7
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		Feb 22
	Feb 18	Regional Ratios		Mar 8
	Mar 4	Snail's Trail		Mar 22
	Mar 18	Pondering Pantographs		Apr 5
	Apr 1	Fix This Picture		Apr 19
	Apr 15	Flying High		May 3
	Apr 29	A Circle Inscribed in an Isosceles Triangle		May 17
	May 13	Problem 19		May 31
	May 27	Problem 20		Jun 16
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	Problem 19		May 24
	May 20	Problem 20		Jun 7

* 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.