How do schools of fish confuse predators? Why do similar fish shoal and school together? Why do some fish live in groups only when they are young? Discover the answers in this colorful book and learn about the many ways living in schools or shoals help fish survive. Free downloadable Teacher's Guide available.
Rocks and minerals are all around us, but they're not all the same. Discover sedimentary rocks and find out how they form, what makes them unique, and how we use them. Explore some sensational sedimentary rocks around the world, such as Australia's Painted Cliffs. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Saturn! Take a fact-filled flight to learn what makes the ringed planet so special. Explore its many moons, stormy skies, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
What is aluminum and how is it made? Using images and simple text, Rocks and Minerals to Aluminum helps young readers understand what a metal is, where it is found, and how humans process it to make things used in everyday life. Aluminum Facts features explain where on Earth the world's most common metal is located. Free downloadable Teacher's Guide available.
How do penguin colonies care for their young? Why do great blue herons migrate in groups? How do prairie dogs warn others of danger? Discover the answers in this interesting book and learn about the many ways living in a colony helps animals survive. Free downloadable Teacher's Guide available.
Jump into orbit around some amazing objects in our solar system: dwarf planets! Take a fact-filled flight around Pluto, Ceres, Eris, Haumea, and learn what makes them so special. Explore their icy surfaces, their moons, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Neptune! Take a fact-filled flight to learn what makes this ice giant so special. Explore its gassy atmosphere, backward-spinning moon, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
We use plastic items every day, but often don't examine what plastics are and how they got to us. Oil to Plastics helps young readers understand how a natural resource can be processed to become a toothbrush or a toy. Simple Plastic Facts boxes explain that plastics can be hard, soft, or in-between. Free downloadable Teacher's Guide available.
Jump into orbit around one planet in our amazing solar system: Mercury! Take a fact-filled flight to learn what makes this tiny planet so special. Explore its speedy travel through space, giant craters, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Rocks and minerals are all around us, but they're not all the same. Discover metamorphic rocks and find out how they form, what makes them unique, and how we use them. Explore some marvelous metamorphic rocks around the world, such as Japan's Susa Hornfels. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Rocks and minerals are all around us, but they're not all the same. Discover minerals and find out how they form, what makes them unique, and how we use them. Explore some marvelous minerals in places around the world, such as the lakes of Mount Kelimutu, Indonesia. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Mars! Take a fact-filled flight to learn what makes the Red Planet so special. Explore its double moons, giant craters, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Jupiter! Take a fact-filled flight to learn what makes the Gas Giant so special. Explore its many moons, stormy skies, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Rocks and minerals are all around us, but they're not all the same. Discover igneous rocks and find out how they form, what makes them unique, and how we use them. Explore some incredible igneous rocks in places around the world, such as the Hawaiian Islands. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Why do gorilla troops move to a new area each day? Why do bonobos sleep in large groups? How do animals in a troop help raise young? Discover the answers in this amazing book and learn about the many ways living in a troop helps animals survive. Free downloadable Teacher's Guide.
Rocks and minerals are all around us, but they're not all the same. Discover fossils and find out how they form, what makes them unique, and what they tell us about the past. Learn about some fabulous fossils found around the world, such as Sue, the Tyrannosaurus rex. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
How do elephants in a herd communicate? Why are caribou safer in large herds? Why do zebras migrate in groups with wildebeest? Discover the answers in this fascinating book and learn about the many ways living in a herd helps animals survive. Free downloadable Teacher's Guide available.
Jump into orbit around one planet in our amazing solar system: Earth! Take a fact-filled flight to learn what makes our home planet so special. Explore its watery surface, its protective atmosphere, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
This dynamic book follows the fluffy fiber known as cotton, from plant to final product--clothing. Close-up images illustrate how cotton is grown, harvested, and processed for sale. Wonder Word features ask readers to think about and engage with concepts such as "environment" and "raw cotton." Free downloadable Teacher's Guide available.
Rocks and minerals are all around us, but they're not all the same. Discover crystals and find out how they form, what makes them unique, and how we use them. Explore some captivating crystals in places around the world, such as Bermuda's Crystal Cave. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Existen más de 300 especies de tortugas. Estas viven desde en las aguas profundas del océano hasta a los hábitats secos del desierto, y varían de tamaños desde pequeñas tortugas de caja hasta tortugas gigantes de los Galápagos. Todas tienen caparazones como parte de sus esqueletos, pero algunos esqueletos son planos y los otros son domos grandes. Algunas tortugas pueden meter sus cabezas dentro de los caparazones para protegerse y otras no. Algunas son herbívoras y otras son omnívoras, pero ninguna tiene dientes. Aprende más sobre las cosas que tienen en común estos reptiles y cómo se diferencian en la edición más reciente de la serie Un libro de comparaciones y contrastes.
Los pulpos y los calamares son invertebrados marinos que a veces son confundidos entre sí. Ambos tienen ocho patas, pero uno también tiene dos tentáculos. Uno tiene pupilas en forma de rectángulo, pero las pupilas del otro son redondas. Uno nada o camina a lo largo del fondo marino con patas fuertes. El otro solo nada usando sus aletas. Uno vive solo en cuevas, mientras que el otro vive en aguas abiertas. Aprende más sobre las similitudes y diferencias entre estos animales en la nueva edición de la serie de Un libro de comparaciones y contrastes.
¿Sabes cuál animal es el hipopótamo y cuál es el rinoceronte? Sí, ambos viven en partes de África, pero los rinocerontes también viven en partes de Asia. Ambos comen hierbas, pero uno pasa la mayor parte del día refrescándose en el agua y solo sale a tierra para pastar en la tarde. El otro pasa la mayor parte de su día pastando. Algunos monos tienen colas prensiles, ¿pero sabías que una especie de rinoceronte tiene un labio superior prensil? ¡Explora las similitudes y diferencias entre estos mamíferos en la edición más reciente de la serie de Un libro de comparaciones y contrastes!
Los peces viven en todo el mundo, tanto en agua dulce como en salada, y en hábitats tropicales, templados y polares. Algunos peces tienen huesos y otros tienen esqueletos de cartílagos. Los tamaños varían desde diminutos peces dorados, hasta inmensos tiburones blancos, con todo tipo de tamaños en el medio. Desde especies planas que habitan en el fondo marino, hasta nadadores con velocidad de torpedo, las formas de sus cuerpos cumplen todas sus necesidades. Algunos peces, como los lenguados y los caballitos de mar, incluso tienen formas que utilizan como camuflaje. Los colores pueden ir desde grises y marrones, rojos, amarillos o azules brillantes. ¡Explora las similitudes y diferencias en la edición más reciente de la serie de Un libro de comparaciones y contrastes!
Algunas historias se cuentan tan seguido que la gente comienza a creérselas, aunque no son verdaderas. Si suficientes personas empiezan a creer en este tipo de historias falsas, a las segundas se les llama mito. ¿Sabes qué es verdad y qué no lo es? ¿Los puercoespines realmente lanzan sus púas? ¿Alguien puede ser tan ciego como un murciélago? ¿Las serpientes son babosas o las zarigüeyas cuelgan de sus colas? ¿Y qué tanta madera puede masticar una marmota? Aprende qué es verdad y qué no lo es en la incorporación más reciente de la serie de Anatomía de los Animales, de Mary Holland
