La Tierra y la luna (Earth and Moon)

Planet Earth gives us the things we need to survive. When it changes, it affects us all. But humans also affect Earth. It’s important that we take care of our planet so that it can continue to take care of us. This Spanish nonfiction book explores the subjects of human ecology and climate change in depth, and introduces students to important scientific concepts and vocabulary like desertification, deforestation, carbon dioxide, erosion, drought, fossil fuels, the greenhouse effect, and more. The colorful images, diagrams, sidebars, and text features will keep students connected to the text....

Introduce students to the scientific method with this Spanish science reader that features easy-to-read text. This book teaches important scientific topics and vocabulary terms including hypothesis, data, experiment, conclusion, method, research, and more. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

What makes something a good value? Why is it important to use money wisely? How will creating a budget help you purchase a new bike? This engaging Spanish book will teach students financial literacy through the use of real-world examples while incorporating nonfiction reading to increase vocabulary and comprehension skills. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of contents will...

El desierto con sus atardeceres multicolores es el escenario de la historia de Johari, un niño huérfano que vivía en Kalahari, el lugar más triste del mundo. Cerca de cumplir los doce años, un comerciante de telas llamado Nala decidió adoptarlo. A pesar de su buena fortuna, la vida no fue lo que él esperaba, entonces Johari empezó a lamentar su suerte. Un día, con motivo del cumpleaños del emperador, su padre le pidió que hiciera un viaje por el vasto desierto para llevar seis rollos de seda hasta la ciudad imperial. Al inicio de la travesía se encontró con un pozo en el que...

A human hand is found in the zoo's elephant enclosure. The rest of the teacher and ardent environmentalist turns up on the lawn. Although admired by his students, nearly everyone else seems to have a reason to want him dead.

Advances in science have changed our world, all thanks to the scientists behind important discoveries. Some of the most important discoveries have come from female scientists, who were as unique for their work as they were for being trailblazers in a male-dominated industry. This text offers a biographical treatment of such important scientists as Marie Curie, Rachel Carson, and Jane Goodall, as well as others who have made it possible for women of the future to have a career in science. Age-appropriate text, fact boxes, historical and modern images, and a comprehensive timeline complete the...

El carácter de Kolmogórov se forjó en una época de revoluciones sociales y guerras mundiales. Vivió el estalinismo, la posterior rectificación de errores y el inmovilismo que luego daría paso a la perestroika. Aunque siempre se consideró a sí mismo un matemático puro, una parte esencial de su obra fueron sus investigaciones aplicadas a otras ciencias. Sus esfuerzos estaban regidos por una idea clara - discernir las diferencias y similitudes entre orden y caos. Mucho más que cualquier otro matemático, amplió los dominios y la comprensión humana del azar. Reinó en una escuela...