El gran libro de los records

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Learn how technology has improved lighthouses over time with this book that features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.

¿Cuál es el verdadero trabajo del youtuber? Ellos mismos te lo cuentan. Mucho se habla de que los youtubers son un montón de vagos que hace pavadas frentes a una camarita. Lo cierto es que cambiaron el paradigma de la comunicación y son los dueños de la audiencia de todas las edades; cada uno con su talento particular. ¿Cuál es su verdadero trabajo? ¿Cuánto tiempo les lleva? ¿Por qué lo hacen? ¿Son todos amigos o hay rivalidades? Esas y muchas otras preguntas más son respondidas en este libro por los youtubers más importantes de la Argentina.

Where did the sunflower come from? How does it grow so tall? How can its thin stalk support such a large and heavy head? These and many other questions are answered in this dazzling book. Using lushly detailed illustrations and photographs, the book takes us inside the sunflower to examine its stem, root system, leaves, and flowering heads, proving an understanding of this unique plant's structure, growth, flowering, reproduction, and cultivation.