Parents can improve their preschool child’s math skills by reading specially designed math picture books to them, according to a new study at Purdue University. Through a grant from the Heising-Simons ...
Michael Freedman’s momentous 1981 proof of the four-dimensional Poincaré conjecture was on the verge of being lost. The editors of a new book are trying to save it. One of the most important pieces of ...
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