Mi Mundo (My World) ¿Qué es una estación?

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Animals sing or talk to communicate. They make noise for different reasons. Find out why some animals make certain noises. Paired to the fiction title So Many Classes.

Bridges are a big part of how people get from place to place. But how do they work and how are they built? In this engaging text, readers will explore these important engineering marvels that link places divided by water. Along the way they’ll learn how to build their own model bridge with a step-by-step guide accompanied by full-color photographs of each step. Accessible text illuminates the science behind every span we drive over—and sometimes under!

Explores The Number Twelve With Relationship To Time, Counting, And Things That Are Sold By The Dozen.