La optimización mecánica en el medio acuático

English-Spanish bilingual edition teaches young children simple manners and kind behavior. When children are kind, courteous, and respectful, people enjoy being around them and reciprocate with the same behavior. Use this English-Spanish bilingual book to teach manners and help young children understand the importance of showing politeness, speaking kindly, using basic courtesies (“please,” “thank you,” “excuse me”), and respecting the feelings of others. A section at the back of the book, in both English and Spanish, provides questions for discussion, scenarios, and role-play...

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

How much life can one cubic foot hold? Read how photographer David Liittschwager and zoologist Chris Meyer studied life in one cubic foot, and how their findings can teach us about life on the entire planet. Created in collaboration with the Smithsonian Institution, this Spanish Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge that is perfect for use in a makerspace and teaches students every step of the engineering design process....

De familia tradicional, aunque ni rica ni noble, PROPERCIO (ca. 50-ca. 15 a. C.) abandonó su Umbría natal para trasladarse a Roma con la intención de dedicarse a la vida pública, pronto desechada al ser acogido en el círculo de Mecenas y Ovidio a raíz de la popularidad que le deparó su primer libro. Sus ELEGÍAS COMPLETAS, pese a abarcar varios tonos y registros, ostentan no obstante como eje principal el amor por Cintia, en vida y más allá de la muerte, unido a una fuerte imaginación visual y una gran capacidad para expresar las pasiones humanas, cualidades que como señala Hugo...