La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

The Mapuches established themselves in the eleventh century in what is now Argentina and Chile. Their literature is very rich and oral in nature, which highlights the legends that speak of their Gods, beliefs, customs, and stories of their encounters with enemies.

A 2014 survey by the Substance Abuse and Mental Health Services Administration showed that 8.7 million youths ages twelve to twenty reported drinking alcohol beyond “just a few sips” in the previous month. Those who start drinking before age fifteen are five times more likely to become dependent on alcohol than those who begin at twenty-one. This resource shows young people how to help a friend who is abusing alcohol. It arms them with facts about alcohol, how it affects the teen mind and body, how to look for signs of a problem, and how to bring others on board to help.

How do you get from place to place every day? Well, believe it or not, people travel in all sorts of ways. From bikes, cars, subways, escalators, and even on animals and tramways, transportation around the world all depends on where you live and where you need to go. Get ready to learn the fascinating ways kids around the globe stay moving! This title will allow students to ask and answer such questions as who, what, where, when, why, and how to demonstrate understanding of key details in a text. • Text based questions • Bold keywords with picture glossary • Multicultural • World map

In My Friend Has Autism, beginning readers are introduced to different characters who have autism, how autism may affect their actions, and how we can be good friends to people who have autism. Vibrant, full-color photos and carefully leveled text engage young readers as they discover how to empathetic and inlude all kinds of friends.