Operaciones básicas de laboratorio de química

Para los TROTAMUNDOS las Matemáticas son mucho más que números y problemas. Son un lenguaje universal que nos permite comunicarnos con los demás, una herramienta para apreciar la belleza de las múltiples formas que nos rodean, y , en definitiva, el camino para convertir el mundo en un lugar más justo y acogedor. ¿Te apuntas a mejorar tu mundo? ¡No puedes negarte!

Rudy can't find his favorite sweater. He's looked everywhere: inside the house, outside, and in the apartments upstairs and downstairs. In the kitchen, in the bathroom, here, there . . . where could it be? This enchanting story has flaps, pages with cutouts, and numbers to count.

Animal trainers care for many different types of animals! Children will explore some of the methods that trainers use, such as affection bonding and classical and operant conditioning, while simultaneously gaining an understanding of animal instincts and animal rehabilitation. Readers are invited to learn about the variety of animals that trainers work with and are encouraged to find an area of study to focus on if they want to become an animal trainer. With stunning images, interesting facts, a glossary of useful terms, informational text, and an interview with a real-life animal trainer,...

Mrs. Frizzle's class investigates the disappearance of the salmon from the sea and in the process learn about migration.