La antigua Grecia (Ancient Greece)

Algorithms might sound like a complicated tech term, but don't be intimidated, people actually use them every day. Using accessible language and full-color photographs, this book simplifies algorithms in an easy-to-understand way. Readers will be amazed to learn that an algorithm is just a set of steps for computers to follow to get things done. STEM topics from the Next Generation Science Standards are emphasized throughout the text. Sidebars featuring key terms help readers grow their tech vocabulary, and fact boxes provide additional opportunities to learn.

Provides basic shapes and other techniques of cartooning, followed by illustrated, step-by-step instructions for drawing cartoon villains, superheroes, manga characters, and more.

Marzo de 2009: un niño estornuda en un pueblo de México. Dos meses después, miles de personas se infectan en todos los rincones del planeta y comienza el recuento de fallecidos. Acababa de estallar la pandemia de la gripe A (H1N1), de consecuencias aún imprevisibles. En 1918, la gripe mató a millones de personas. Estamos ahora mejor preparados que hace un siglo? Ha sido exagerada la respuesta de las autoridades o se ha hecho frente al problema con la severidad necesaria? Es segura la vacuna contra la gripe? Qué consecuencias puede acarrear no vacunarse? Más allá de la gripe, pueden...

Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines Work uses simple text and full-color photographs to help ELL students understand the principles behind simple machines. Each volume includes three diagrams to enhance comprehension. The text uses authentic language and is designed to build reading skills as well as knowledge of basic science concepts.

The Industrial Revolution brought important changes to America. People began migrating to cities for work, and immigrants began to arrive in American in larger numbers than ever before as they looked for new employment opportunities. Readers explore the impact of the Industrial Revolution on U.S. migration and immigration patterns. As readers learn about essential social studies curriculum topics, engaging historical images and detailed primary sources hold their interest. This transformative period in American history comes alive for readers with each turn of the page.