La energa / Energy

One of the most popular narrators of his time, Arthur Conan Doyle, was a visionary man with attitudes which were far ahead of his time. In this book we will know in depth his biography, his work, beyond the creation of the illustrious Sherlock Holmes, and his spiritualistic inquisitiveness.

How does a frog grow? Beginning as a tiny egg and then a tadpole, a frog stays mostly in the water until it is fully grown.

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 the different ways that people spend, save, and budget their money. Readers are introduced to important personal financial aspects such as savings accounts, budgets, budget analysis, credit and debit cards, and taxes. Through Spanish-translated informational text, vivid photos, and helpful graphs and charts that assist in implementing mathematical skills such as percentages, readers will be encouraged to save and spend their money wisely and responsibly.