En el trabajo: Contratistas: Perímetro y área (On the Job: Contractors: Perimeter and Area)

When you order this book from thePoetry genre of the Puertas al sol or Gateways to the Sun collections, you will receive its correspondingjournal FREE ( Poemas Journal D)

The moon people, Kaluma, Aluma, and others use a cloud bridge to travel to the Earth, a messy but beautiful world of incredible variety that becomes their new home.

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In this highinterest book, readers will learn more about Earth's neighbor, including what its climate and surface are like, why it's called the Red Planet, and about the recent discovery of water on its surface. They'll learn all this while solving "Your Mission" math problems that complement and support the text. This motivating volume is an engaging way to explore key aspects of science and math curricula.

When a bird flies by a window or a car zooms by on the highway, we often wonder how fast the two objects traveled. This book explains the concept of speed to readers while showing them accessible ways to measure it for themselves. Learning the amount of distance traveled, and how quickly that distance was covered, is a great way to implement a variety of STEM topics while practicing this essential mathematical skill.