Desafíos matemáticos

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

Describes the life of a baby seal, from birth with fur so wet it looks yellow, through molting and learning to swim and hunt, to setting off into the open sea.

Discusses the origins of tomatoes, the many different kinds, their uses in Latin America, their spread throughout the world, and tomato festivals.

Pura Belpré Illustrator Honor 2018 ALA Notable Children's Book 2018 New York Times/New York Public Library Best Illustrated Children's Book of 2017 Barnes & Noble Best Book of 2017 Smithsonian Top Ten Best Children's Book of 2017 Frida Kahlo y sus Animalitos, written by Monica Brown and illustrated by John Parra, is based on the life of one of the world's most influential painters, Frida Kahlo, and the animals that inspired her art and life. Brown's story recounts Frida's beloved pets—two monkeys, a parrot, three dogs, two turkeys, an eagle, a black cat, and a fawn—and playfully...

This nonfiction Spanish book teaches students about the earth’s cycles, and introduces them to important scientific concepts and vocabulary terms like combustion, hydrosphere, biosphere, and fossil fuels. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation. Keep students reading with this fascinating Spanish book.