Thomas Jefferson no firmó la Constitución (Thomas Jefferson Didn't Sign the Constitution)

[English] Explains many different ways that children can be fair and show fairness.[Spanish] A veces es difícil ser justos porque no siempre significa hacer las cosas "por igual". Es tratar a las demás personas como quieres que te traten a ti y tener en cuenta sus sentimientos. ¿Cómo eres una persona justa?

Where is your brain exactly? What does it do? Use your brain to read this engaging, Spanish-translated title and learn all about it!

Acuciosa biografía de Jules Verne, el autor de los Viajes Extraordinarios, enriquecida con textos e información novedosa. Constituye un mágico paseo por los sinuosos y complejos acontecimientos vitales que propiciaron la creación de su obra.

The asteroid belt between Mars and Jupiter is an intriguing area of our solar system. Scientists have counted over 670,000 known asteroids there, but there could be millions more not yet found. Readers will discover much more about the asteroid belt in this highinterest book, which blends science and math. They'll read about several topics, such as space missions to the asteroid belt and the difference between an asteroid and a planet, and solve associated math problems-just like actual space scientists do!