Círculos matemáticos

Learn about the rich history of Mission Santa Cruz: how it started, the people who ran it, the indigenous population, and its legacy today.

What has a head, two tails, and shoots across the sky? A comet. Coming from the far edges of the solar system, most comets travel around the Sun, while meteors appear as flashing streaks of light in the night sky. Explore these amazing celestial wonders as they zip through space! This book looks at the difference between comets and meteors and their effects on Earth. The physical characteristics of each are identified in detail. This book won’t come crashing down! It’s filled with fun facts that give additional information on this exciting science topic. This book allows students to use...

Readers will learn about one of their favorite farm animals--pigs! This title is informative--telling readers what pigs eat, what they look like, and how we use pig products every day. The text is very simple, which will reinforce early reading skills. Aligned to Common Core Standards and correlated to state standards.Abdo Kids is a division of ABDO.

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!