MECÁNICA DE FLUIDOS. PROBLEMAS Y SOLUCIONES

Our closest solar system is about 10 light years away. It has two main types of planets. Some are rocky and small, like planet Earth, while others are huge balls of gas, like Jupiter. Learn about how astronomers once thought our solar system was the one and only, to how they have now discovered hundreds of stars with planets orbiting them, which means there could be billions of solar systems in outer space! Just maybe, these alien worlds could host life, like our own amazing planet. This book allows students to use observations of the Sun, moon, and stars to describe patterns that can be...

Introduces the life and times of Underground Railroad and anti-slavery leader Harriet Tubman and explains her place in American history.

Procurar buenos hábitos de higiene —como lavar las frutas y verduras, lavarse las manos antes de comer y después de ir al baño, y beber agua pura y simple— resulta importante para prevenir enfermedades gastrointestinales. Esto es lo que la niña protagonista de este cuento aprende cuando está a punto de cruzar la delgada línea entre la vida y la muerte.

Throughout history, women were kept in the home and out of the workplace. Over time, however, women began breaking out of their traditional roles and entering spaces traditionally occupied by men—including the boardroom. This biographical text looks at the lives of the fascinating females who broke barriers in business. Coco Chanel, Estee Lauder, Oprah Winfrey, Melinda Gates, and Sheryl Sandberg are just some of the groundbreakers covered in this text. Age-appropriate text, colorful visuals, fact boxes, and a comprehensive timeline complete the learning experience.