Matemáticas en Marte (Math on Mars)

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!

Esta es una historia que trata de mostrar a niños, jóvenes y a adultos la importancia de cuidar de los diversos seres que constituyen nuestro planeta. Se refiere a una pequeña mofeta que viaja por distintos países en busca de su familia y, durante su recorrido, se describe los exquisitos paisajes, con su flora y fauna. De esta forma, niños, jóvenes y adultos, a través de la descripción, irán haciendo un hermoso recorrido por diversos y maravillosos lugares del planeta.

Unas vacaciones con un desenlace inesperado, un equipo de ft︢bol de provincias humilde pero ambicioso, un reencuentro con el pasado en la ciudad de juventud: tres escenarios, tres familias. Tres viajes que sumergen al lector en los vn̕culos emocionales que rigen las relaciones entre los personajes. Los protagonistas de los relatos que componen este volumen ("Siempre hay un perro al acecho", "El fin de los buenos tiempos" y "La ley de la gravedad") estǹ marcados por secretos silenciados, por acusaciones reveladoras, por el amor y el implacable paso del tiempo.

Saving and spending are building blocks of the economy. Readers will learn about various sources of income as well as concepts such as how saving a little at a time can eventually add up to a lot of money. This informational text explains ideas such as keeping track of expenses, financial goals, budgeting, and investing. Readers will learn about different types of savings plans, such as those for college and retirement. This resource also includes the ideas of donations and philanthropy.

This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.