CTIM: Láseres: Medición de la longitud: Read-along ebook

Kim es una muchacha de trece años que empieza a tener problemas con su alimentación. Se ve gorda y deja de comer. Con ayuda, acepta gradualmente que su comportamiento puede resultarle perjudicial a largo plazo. A medida que se recupera, entiende que su enfermedad no sólo tiene que ver con la comida... ¿Por qué se siente tan insegura? ¿Es sólo una cuestión de estética?

Princesses must always be perfectly dressed. Whether it's for a walk on the lake, under the Northern Lights or for a wedding at an ice palace, what matters is having the right style. With the beautiful stickers that you will find in this book, you can dress these princesses for every occasion.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Discover Dinosaurs Spanish Edition. Dinosaurs were reptiles that lived millions of years ago. It was a long time before there were any people on the earth. Scientists have looked at dinosaur bones and found out many things about what they were like. Nobody knows why the dinosaurs disappeared. People have made pictures to show what they might have looked like. What do we know about dinosaurs?