The Practical Book is the lab manual for each course and contains all of the experiments to enhance the lessons of the program. Practicals (or experiments) are designed to help students develop good lab skills and scientific methodology. This book is designed for a school setting and uses some lab equipment that may not be readily available to homeschool families. It is even suggested that some of the labs be carried out only in a science laboratory setting. Homeschool families and smaller schools with limited budgets can still use this book but will need to adapt or omit some of the labs. The course is completely doable without using this book. The Practical Teacher Edition includes the same pages as the student Practical Book with answers filled in.