The Ontario Teacher's Guide: Nature Studies is published by the Ontario Board of Education and is intended for teachers. The book examines in detail the methods and techniques of studying nature in the school environment. The authors provide the reader with well-founded advice on the organization of the educational process in natural science, the use of visual aids and laboratory equipment, as well as conducting field research. The book will help teachers to create interesting and informative lessons in natural science, contributing to the development of students' natural cognitive activity.