Apuntes de matemáticas

Arguing that a love of good poetry first develops during one’s early years, this book includes accessible and fun poetry for young readers. Argumentando que un amor de la buena poesía desarrolla primero durante la niñez, este libro incluye poesía acesible y divertida para los jóvenes lectores.

Getting bored is impossible with this book in your hands: it is the definitive game book. It contains more than 100 games with which to challenge the neurons of the smartest children, from naval battles where strategy is everything to sudoku puzzles or math challenges, through memory games and minesweepers ... among many others.

Learn all about the National Hockey League. Discover fascinating facts, from record-breaking stars to winning teams and important positions.

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.