La reproducción de las plantas (Plant Reproduction)

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about the U.S. Constitution, the Articles of Confederation, the Connecticut Compromise, and the Bill of Rights. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with...

La reina blanca narra la historia del amor entre Elizabeth Woodville y Eduardo IV, rey de Inglaterra. Un amor que causará un gran escándalo y cambiará el destino de Inglaterra para siempre. Inglaterra está en plena Guerra de las Rosas, una contienda familiar, una batalla que enfrenta a hermanos y primos que luchan para obtener el derecho a reclamar el trono de Inglaterra. Pero el rey se ha enamorado de la preciosa viuda y se casan en secreto a las pocas semanas. Cuando el matrimonio es descubierto, Elizabeth y su familia se ven pronto en el centro de una lucha por el poder en la corte...

Many animals live in water, but only some can be defined as fish. Twenty-eight thousand species of fish exist, each with different characteristics. Readers from grades one through four will learn that fish have a distinct impact on their ecosystem and will see how fish survive when well-adapted to an uncompromised environment. Beautiful photographs demonstrate the great diversity of fish and accompany intellectually stimulating explanations of their varying roles and traits. From page to page, what a fish is unfolds in vocabulary call-outs, insightful questions, and relatable...