Current Problems of the Week
Primary
Fourth of July
 May 25
How many hot dogs and hot dog buns does Mom need to buy? 
AlgebraLatest Solution: Cheap Sunglasses 
Geometry
Arc to Area
 May 25
Latest Solution: Making a Map
Given the angle of an arc and its endpoints, find the area of the circle that contains the arc. 

PreAlgebra
Ducky Promenade
 May 25
Latest Solution: Change Woes
Can you find the weight of a duckling and two ducks after reading the poem? 
Trig & Calculus
Rationals and Irrationals
 May 18
Latest Solution: One Area  Many Solutions
Think of irrational numbers like e, √2, or π. Can irrational arithmetic ever yield rational answers? 