Los ciclos de vida de los anfibios (Amphibian Life Cycles)

Life on Earth depends on carbon. In fact, about 18.5 percent of a human body's mass is carbon. How carbon is taking in and given off through animals' breathing, the burning of fossil fuels, and more can be shown in the model known as the carbon cycle. Though this concept can be confusing, all readers have a chance to understand this concept through the text and simple diagrams in this book. Both struggling readers and those looking for review can find the most important components and vocabulary of the carbon cycle in low-level, accessible text.

There are thousands of species of bees, and not all are yellow and black. However, the telltale yellow and black of the honeybee and bumblebee are the best known. Beginning readers explore the world of bees and find out what keeps them busy all day. From flying from flower to flower to making honey, the details in this book are both familiar and new to curious future entomologists. Full-color detailed photographs complement the low-ATOS text, making it the perfect addition to any early elementary library or classroom.

Learn how crayons are made with this fun and informative STEAM book! Perfect for kindergarteners, this title makes it easy for parents and teachers to introduce STEAM to their youngest learners. Created in collaboration with Smithsonian, this Spanish book uses real-world examples to make STEAM topics easier to understand. It features an age-appropriate STEAM activity that is ideal for makerspaces and introduces English language learners to the steps of the engineering design process. It helps beginning readers learn to read and is ideal for children ages 4-6.

Biología sin pérdida de tiempo, para maestros y alumnos con prisa, volúmenes I y II, son libros electrónicos creados por médicos y biólogos ampliamente calificados, que han dedicado su vida a la docencia y la investigación. La finalidad de estos libros es proporcionar al docente contenidos sintetizados del programa de biología, libres de información superflua o baladí. Además, incluyen un extenso banco de preguntas con respuestas de opción múltiple, que permiten preparar exámenes con sólo copiar y pegar los reactivos elegidos, así como calificarlos con mucha rapidez, lo cual...

Las flores brillantes, los tiernos animalitos, las plantas frescas. ¡Hay colores por todos lados en la primavera! Explora los colores del mundo a tu alrededor. ¿Qué colores te hacen pensar en la primavera? ¿Qué puedes crear con los colores de la primavera? Anima a los lectores a reconocer el color del mundo real y a crear sus propias obras de arte inspiradas en la primavera por medio de fotos vibrantes y texto lírico. Bright flowers, cute baby animals, fresh plants--colors are everywhere in spring! Explore color in the world around you. What colors make you think of spring? What can you ...

Publicado en 1884 “Juvenilia” reúne los recuerdos estudiantiles del reconocido escritor argentino Miguel Cané. El autor novela sus recuerdos sin un orden cronológico, para llevar al lector a través de sus andanzas en el Colegio Nacional de Buenos Aires.