Current Problems of the Week
Algebra
Calendar Calculations
 September 1
Latest Solution: My Three Dogs
Use variables to explore a numeric pattern on the calendar. Preview: Kristina's Code 

Math Fundamentals
Mr. Lincoln's Line
 September 1
Latest Solution: Football Fanfare
Find out who's wearing glasses and carrying lunch boxes in Mr. Lincoln's lunch line. Preview: Birthday Trip 
Geometry
Lost at Sea?
 September 8
Latest Solution: Fitting In
Use three bearings to determine whether a boat is in the United States or Canada. 
PreAlgebra
Forming Triangles from a Folding Ruler
 September 8
Latest Solution: Boxes of Stationery
Describe the three triangles that can be made. 
Trig & Calculus
Find the Function
 September 1
Latest Solution: Preparing for the Test
Can you determine the function given only four clues? Preview: Is It a Midpoint? 