Sumando y Restando en el Club de Matematicas

¿Sabías que los insectos palo se llaman ninfas cuando son jóvenes? Las ninfas cambian la piel cuando crecen. Aprende más datos fascinantes en Los insectos palo, uno de los libros de Insectos Fascinantes. Did you know that stick insects are called nymphs when they are young? Nymphs shed their skin as they grow. Learn more fascinating facts in Stick Insects, a Fascinating Insects book.

“Dino” Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children’s books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

What substance can act like both a solid and a liquid? Slime! Want to find out how to make your own? Just follow the simple steps inside this book