Un día en el zoológico (Day at the Zoo) (Spanish Version)

A community center has many exciting activities to choose from. You can play games, swim, and even learn how to cook there. As you read, you can compare the size of a tennis racket to a ping pong racket, use cubes to measure the world's smallest snake, and even use feet to measure the length of a basketball court. What would you use to measure a snake?

There is a contest at a school to design a new playground. The students use blocks to build their models. As they build, they use three-dimensional shapes. Some students build a train out of blocks for the younger students to play on. Can you guess which three-dimensional shape they use for the train's wheels? Read to find out which design wins.

Cuando decidas recorrer la dimensión tiempo de tu memoria (dtm), descubrirás que te has transformado por medio de una lenta metamorfosis psíquica en «80 teorías (80t) y un drama sobre la muerte (1dm)». (dtm = 80t + 1dm) Nuestros recuerdos son como un amasijo de chatarra, enmarañada de sueños, miedos y fantasmas, resultado de una gran colisión entre cuatro trenes que recorren las vías del tiempo. A velocidad de vértigo se desplaza un tren que viene del pasado remoto, cargado con «recuerdos ancestrales», contagiados de cerebro a cerebro y que heredamos como una ilusión propia;...

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about California’s gold rush by examining maps, letters, images, and art from that time. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary...

Provides detailed instructions for experiments involving cells, the brain, the senses, breathing, circulation, and other areas of the human body.

Ecos, tímpanos, vibraciones y volumen. Vívidas ilustraciones y textos sencillosexploran la asombrosa ciencia del sonido. Cada libro tiene un glosario, actividades prácticas y fascinantes datos curiosos.