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Con la idea de que pensar y discutir sobre problemas matemáticos podría generar el mismo entusiasmo que practicar un deporte en equipo, en la antigua Unión Soviética surgió el singular movimiento cultural de los CÍRCULOS MATEMÁTICOS, que dejó tras de sí un intenso rastro de problemas, enfoques y textos. CÍRCULOS MATEMÁTICOS recoge parte de aquella emocionante experiencia.Es un libro de divulgación matemática dirigido a todos aquellos que sienta curiosidad por el juego mental que implican las matemáticas y que deseen indagar en sus ramas menos conocidas. También es un libro...

Hungry for a new drawing challenge? Well, get ready to enter planet cute! In her new collection, artist-author Angela Nguyen turns even the most mundane foods into living, breathing, adorable characters that you will want to draw yourself. As well as cute food-creature fusions such as blueberry kittens and sausage dog hotdogs, in Angela's captivating world, sleeping cats lounge atop sushi, curl inside donuts, or peek out from pizza crusts. Including beautifully clear and straightforward step-by-step instructions and minimal text, How to Draw Really Cute Food is great for both visual learners...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

Explore outer space and learn about stars, galaxies, planets, asteroids and how these bodies are all related to one another. Featured in this book are photographs from outer space and related vocabulary.