The motion of objects can be observed and measured. Students know an object s motion can be described by recording the change in position of the object over time. Students know the way to change how something is moving is by giving it a push or a pull. The size of the change is related to the strength, or the amount of force, of the push or pull. Students know objects fall to the ground unless something holds them up.
Students know magnets can be used to make some objects move without being touched.
Students know sound is made by vibrating objects and can be described by its pitch and volume. Plants and animals have predictable life cycles. Students know that organisms reproduce offspring of their own kind and that the offspring resemble their parents and one another. Students know the sequential stages of life cycles are different for different animals, such as butterflies, frogs, and mice. Students know many characteristics of an organism are inherited from the parents.