III Know the parts of the human body and their functions.
1 Know that bacteria and viruses are germs that affect the human body.
2 Describe the nutrients needed by the human body.
III Understand the structure of Earth, the solar system, and the universe, the interconnections among them, and the processes and interactions of Earth's systems.
I Know the structure of the solar system and the objects in the universe.
1 Describe the objects in the solar system (e.g., sun, Earth and other planets, moon) and their features (e.g., size, temperature).
2 Describe the relationships among the objects in the solar system (e.g., relative distances, orbital motions).
3 Observe that the pattern of stars stays the same as they appear to move across the sky nightly.
4 Observe that different constellations can be seen in different seasons.
5 Know that telescopes enhance the appearance of some distant objects in the sky (e.g., the moon, planets).
II Know the structure and formation of Earth and its atmosphere and the processes that shape them.
1 Know that Earth's features are constantly changed by a combination of slow and rapid processes that include the action of volcanoes, earthquakes, mountain building, biological changes, erosion, and weathering.
3 Know that air takes up space, is colorless, tasteless, and odorless, and exerts a force.
4 Identify how water exists in the air in different forms (e.g., in clouds and fog as tiny droplets; in rain, snow, and hail) and changes from one form to another through various processes (e.g., freezing/condensation, precipitation, evaporation).
III Science and Society
I Understand how scientific discoveries, inventions, practices, and knowledge influence, and are influenced by, individuals and societies.
I Describe how science influences decisions made by individuals and societies
1 Describe how food packaging (e.g., airtight containers, date) and preparation (heating, cooling, salting, smoking, drying) extend food life and the safety of foods (e.g., elimination of bacteria).
2 Know that science produces information for the manufacture and recycling of materials (e.g., materials that can be recycled [aluminum, paper, plastic] and others that cannot [gasoline]).
3 Know that naturally occurring materials (e.g., wood, clay, cotton, animal skins) may be processed or combined with other materials to change their properties.
4 Know that using poisons can reduce the damage to crops caused by rodents, weeds, and insects, but their use may harm other plants, animals, or the environment.