Bitácora 1 - Cuaderno de ejercicios + CD - Nivel A1

Five and counting! So far, astronomers have discovered five dwarf planets in our solar system. Pluto, which was once thought of as the ninth planet, is today classified as a dwarf planet. This book looks at the current dwarf planets, characteristics, size, and orbital patterns, as well as the three rules scientists follow to characterize these tiny, round space objects. Every day new discoveries are being made. Who knows how many dwarf planets we will find in the future! This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, ...

"Una niña de nueve años, divertida y muy madura se enfrenta a la separación de sus padres, obligada a escoger entre la aparente estabilidad que le ofrece su madre y la vida bohemia y despreocupada junto a su padre en el campo. Una novela tierna, fresca e ingeniosa."--Casadellibro.

Introduces the life and times of Underground Railroad and anti-slavery leader Harriet Tubman and explains her place in American history.

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.