Overview of the 11th very green experimental step-by-step book

Many people have a wrong way of thinking about the step-by-step book and think that the children will be weak in spite of the answers to the questions in the lesson, while the students should know these answers for when they have solved the exercises themselves and then come to this Expression book so that if they make a mistake, they will understand and solve their problem by reading descriptive answers. With the 11th experimental step-by-step book, you don't have to worry about checking the answers to your exercises and know that you can understand the material more deeply with proper use.