NSES Content Standard F  Science in Personal and Social Perspectives: Personal health Grades 5-8, page 168 Food provides energy and nutrients for growth and development. Nutrition requirements vary with body weight, age, sex, activity, and body functioning.

 
Benchmark 6C The Human Organism: Basic Functions
Grades 3-5, page 136
From food, people obtain energy and materials for body repair and growth. The undigestible parts of food are eliminated.

Benchmark 6E The Human Organism: Physical Health
Grades 3-5, page 144
Food provides energy and materials for growth and repair of body parts. Vitamins and minerals, present in small amounts in foods, are essential to keep everything working well. As people grow up, the amounts and kinds of food and exercise needed by the body may change.

Benchmark 6E The Human Organism: Physical Health
Grades 6-8, page 145
The amount of food energy (calories) a person requires varies with body weight, age, sex, activity level, and natural body efficiency. Regular exercise is important to maintain a healthy heart/lung system, good muscle tone, and bone strength.