Roger Howe
A logical reasoning problem pivotal to the novel Harry Potter and the Sorcerer's Stone is discussed at two levels.
G. Vennebush
The history of the unsolved moving sofa problem, presents one possible solution, and gives several suggestions for how this problem can be used in the classroom.
Eric Knuth
An illustration of what it might mean to engage students in problem posing and how teachers might begin to create classroom environments that encourage, develop, and foster mathematical curiosity.
Angela Köhler
Students predict the growth of the population of the United Stated using three different models.