The primary section, of ages six to approximately ten, is the second developmental level of the child. Step by step they have to be guided to be masters of the universe of adult knowledge. They must learn multiple styles of reasoning, analysis, calculation, recording, and most of all, critical thinking and research. They must also engage in issues of the environment. They should begin to understand social problems. They have to know what is their nation state and what is expected of them as citizens. All these important parts of the curriculum are approached through many teaching techniques, described below.