People swim for many different reasonsâ€”recreation, exercise, or competition. The goal of competitive swimming is to be the fastest in a variety of events featuring different strokes. Kids will learn the history, strokes, rules, and much more! Blastoff! Series
En el libro aprenderás por qué hay diferentes temperaturas y te enseñará a hacer experimentos.
This book describes the most current and popular video games, the history of video games, how they work, and the impact they might have on our future.