# Mathematical Digest

### Short Summaries of Articles about Mathematics

in the Popular Press

"Discover's Guide to the Greatest Science Gifts." *Discover*, 12 November 2003.

Among the recommended gifts are two mathematics-related ones, each illustratedin the article: Klein Bottles and Tensegritoy. Reviewer Jennifer Kahn notesthat "since its conception, the idea of the Klein Bottle has held a specialfascination for mathematicians, but no one had actually ventured to make oneout of glass until 1997." She gives some background on Klein and describes thevarious products Chris Stoll produces. Reviewer William Jacobs describes thenew offering of Design Science Toys---Tensegritoy, sets of materials that can beassembled with detailed instructions for building three basic structures, atetrahedron, an octahedron, and an icosahedron.

*--- Annette Emerson*