Tu mundo: Secretos de los supermercados: Multiplicación (Your World: Shopping Secrets: Multiplication)

Este libro ilustrado para niños recrea escenas del béisbol para enseñar a contar del 0 al 20 mediante versos en rima. Las reglas y la cultura del juego se muestran a través de una competencia.

Un cuento acerca de un conejo que describe las situaciones en que siente celos. Incluye una ficha para los padres. Un libro para enseñar a superar esos malos sentimientos: los celos.

When they were teenagers, George and Natalia fell madly in love, but his being American and her being Spanish forced them to separate. Ten years later, they meet again and those feelings resurface with overwhelming force. Nat, aware of her difficult personal situation, refuses to give love a chance, but George is not ready to lose the woman he has always loved.

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together they discovered two elements and won a Nobel Prize in 1903. (Later Marie won another Nobel award for chemistry in 1911.) She died in Savoy, France, on July 4, 1934, a victim of many years of exposure to toxic radiation.