This book, from "A World to Discover" collection for grade four is divided into five units. Each unit contains a particular scientific field: Animals and the Environment, Plants and the Environment, Man and Health, Earth and Universe, and Matter and Energy. This book is available in an enriched animated projection with a teacher’s guide. 
For each chapter, the student as an apprentice researcher is invited to question, observe, research, experiment, discover, and reach a clear answer to their hypothesis.