El Ciclo de Vida de la Flor

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

"Simple text and color photographs describe the units and tools used to measure time--in both English and Spanish"--

Imagina el verano perfecto, lejos de un hogar en el que no estás a gusto, en un país diferente y lleno de posibilidades; viviendo en mitad del campo y en compañía de una familia que te quiere, enamorándote como nunca lo has hecho. Ahora imagina que un día estallan las bombas y que, junto a quien es el amor de tu vida, tienes que aprender a sobrevivir en medio de una guerra sin sentido. Puedes imaginarlo o leer esta novela.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.