Princesas que cambiaron el cuento

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

What's hidden in the woods? Look closely through three colored transparent sheets to discover hidden secrets. Start with green and nothing moves. As if by magic each sheet shows animals and plants coming to life. Watch nature's surprises emerge in front of your eyes.

Para cambiar la mentalidad racista de su tiempo era necesario el liderazgo de una persona cuya decisión llegara a enfrentarse con valentía incluso a la posibilidad de morir por la tolerancia. Martin Luther King inculcó en su país y en el mundo entero la educación para la paz necesaria para aprender que la acción no violenta es el mejor camino para avanzar en los derechos humanos.

The scientific method lists important steps in the process of conducting scientific study and research. With detailed images and fascinating sidebars, this nonfiction book explores the scientific method and scientific practices in depth, and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.