El sistema óseo (The Skeletal System)

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Construcción & Arquitectura, ofrece la posibilidad de descubrir, por un lado, el apasionante "arte de construir" un banco, una escalera de caracol, un columpio o un quiosco; y, por otro lado, el sorprendente "arte de proyectar y construir edificios", como una torre, una casa de ladrillos, un iglú o el skyline de toda una ciudad. Cada práctica consta de una breve introducción al ejercicio, una relación de los objetivos didácticos del trabajo, un listado de los materiales y herramientas necesarios, una descripción paso a paso de su realización y una curiosa respuesta a un ¿Sabías...

Introduce readers to the various ways they can participate in volunteerism with this Spanish-translated nonfiction title. Readers will discover many different charities and programs, including The Salvation Army, Feeding America, Habitat for Humanity, and Doctors Without Borders through vivid images, charts, and informational text. This nonfiction title aids in encouraging children to make a difference in their own communities by writing to newspapers or politicians or by participating in fund-raising and various programs or charities. This 6-Pack includes six copies of this title and a...

Where Do You Come From? Learn About Heritage And How To Build Your Own Family Tree. Social Studies Based Leveled Readers For Use In Guided Reading And Social Studies Instruction.