Mathematical products / Philip J. Davis --
The largest known prime number / Evelyn Lamb --
A unified theory of randomness / Kevin Hartnett --
An "infinitely rich" mathematician turns 100 / Siobhan Roberts --
Inverse Yogiisms / Lloyd N. Trefethen --
Ramanujan in bronze / Gerald L. Alexanderson, with contributions from Leonard F. Klosinski --
Creating symmetric fractals / Larry Riddle --
Projective geometry in the moon tilt illusion / Marc Frantz --
Girih for domes: analysis of three Iranian domes / Mohammadhossein Kasraei, Yahta Nourian, and Mohammadjavad Mahdavinejad --
Why kids should use their fingers in math class / Jo Boaler and Lang Chen --
Threshold concepts and undergraduate mathematics teaching / Sinéad Breen and Ann O'Shea --
Rising above a cause-and-effect stance in mathematics education research / John Mason --
How to find the logarithm of any number using nothing but a piece of string / Viktor Blâsjö --
Rendering Pacioli's Rhombicuboctahedron / Carlo H. Séquin and Raymond Shiau --
Who would have won the Fields Medal 150 years ago? / Jeremy Gray --
Paradoxes, contradictions, and the limits of science / Noson S. Yanofsky --
Stairway to heaven: the abstract method and levels of abstraction in mathematics / Jean-Pierre Marquis --
Are our brains Bayesian? / Robert Bain --
Great expectations: the past, present, and future of prediction / Graham Southorn.
