La optimización mecánica en el medio acuático

La pandemia de marzo de 2020 detuvo abruptamente el mundo. Los trabajadores de primera línea arriesgaron sus vidas para brindar servicios esenciales, mientras que la enfermedad del coronavirus 2019 (COVID-19) devastó familias, escuelas e industrias. ¿Cómo mejoraron las cosas? Esta narración en verso da una visión aleccionadora de ese momento doloroso de la historia.

Posing questions which range from the most unusual matters to the most elementary ones, Questions that make your hair stand on end 2 focuses on the Earth and the Sun. Readers will be able to entertain themselves with very illustrative experiments and will also get to know what is so special about the Eiffel Tower, who Diogenes was, why Magellan lost a day on his way, why we get goose bumps, how can temperature be measured with a cricket, among other curious facts. In addition to the recognition of critics and readers, Questions that Make Your Hair Stand on End 2 was awarded the Premio...

¿Qué significa jugar limpio? Cumplir las reglas, ayudar a los demás y respetar los turnos son algunos ejemplos. Este libro se combina con el título de ficción Tu turno. What does it mean to play fair? Following rules, helping others, and taking turns are a few ways to do it. This Spanish book pairs with the fiction title Tu turno.

Learn about the many things humans can do to get warm when they are too cold. Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Perfect for English language learners, this Spanish book builds 1st grade students’ early literacy skills.