Kolmogórov

In 1848, gold was discovered in California, attracting over 300,000 people from all over the world, some who struck it rich and many more who didn't. Hear the stories about the gold-seeking 'forty-niners!' With black-and-white illustrations and sixteen pages of photos, a nugget from history is brought to life!

This illustrated book presents children with a series of fun experiments and activities involving everyday household items such as a glass, thread, clothespins, dominoes, and water. It will give them a hands-on way to learn about the marvelous world around them.

A journey into the ocean’s depths to learn about these fascinating animals: their habitat, how they breathe and swim, and how pollution and trade affect their existence. En esta obra se describe acerca de la vida de las ballenas y delfines: De que tamano son, como son y los lugares que habitan. Los alimentos que consumen, si poseen dientes y su el tamano. A la que familia pertenecen. Sobre su respiración y formas de nadar. Sobre los bebes de las ballenas y delfines. Los lugares que recorren durante el invierno y verano.ó Los sonidos que emiten las ballenas y delfines, sus acrobacias,...

In the United States, the ability to take informed action is becoming increasingly necessary, and difficult. This book delves into the importance of being informed and explains how not all sources of information are equal. Readers are introduced to the scientific method as a way of testing information for credibility. Students will also learn how to turn credible information into action by forming groups, protesting, contacting elected representatives, and possibly even running for office themselves someday.