Taken from: http://www.cde.ca.gov/be/st/ss/scgrade3.asp
Last modified: Thursday, July 20, 2006
Grade ThreeScience Content Standards.
- Energy and matter have multiple forms and can be changed from
one form to another. As a basis for understanding this concept:
- Students know energy comes from the Sun to Earth
in the form of light.
- Students know sources of stored energy take
many forms, such as food, fuel, and batteries.
- Students know machines and living things convert
stored energy to motion and heat.
- Students know energy can be carried from one
place to another by waves, such as water waves and sound
waves, by electric current, and by moving objects.
- Students know matter has three forms: solid,
liquid, and gas.
- Students know evaporation and melting are changes
that occur when the objects are heated.
- Students know that when two or more substances
are combined, a new substance may be formed with properties
that are different from those of the original materials.
- Students know all matter is made of small particles
called atoms, too small to see with the naked eye.
- Students know people once thought that earth,
wind, fire, and water were the basic elements that made
up all matter. Science experiments show that there are more
than 100 different types of atoms, which are presented on
the periodic table of the elements.
- Light has a source and travels in a direction. As a basis
for understanding this concept:
- Students know sunlight can be blocked to create
- Students know light is reflected from mirrors
and other surfaces.
- Students know the color of light striking an
object affects the way the object is seen.
- Students know an object is seen when light traveling
from the object enters the eye.
- Adaptations in physical structure or behavior may improve
an organism’s chance for survival. As a basis for understanding
- Students know plants and animals have structures that
serve different functions in growth, survival, and reproduction.
- Students know examples of diverse life forms in different
environments, such as oceans, deserts, tundra, forests,
grasslands, and wetlands.
- Students know living things cause changes in the environment
in which they live: some of these changes are detrimental
to the organism or other organisms, and some are beneficial.
- Students know when the environment changes, some plants
and animals survive and reproduce; others die or move to
- Students know that some kinds of organisms that once lived
on Earth have completely disappeared and that some of those
resembled others that are alive today.
- Objects in the sky move in regular and predictable patterns.
As a basis for understanding this concept:
- Students know the patterns of stars stay the
same, although they appear to move across the sky nightly,
and different stars can be seen in different seasons.
- Students know the way in which the Moon's appearance
changes during the four-week lunar cycle.
- Students know telescopes magnify the appearance
of some distant objects in the sky, including the Moon and
the planets. The number of stars that can be seen through
telescopes is dramatically greater than the number that
can be seen by the unaided eye.
- Students know that Earth is one of several planets
that orbit the Sun and that the Moon orbits Earth.
- Students know the position of the Sun in the
sky changes during the course of the day and from season
Investigation and Experimentation
- Scientific progress is made by asking meaningful questions
and conducting careful investigations. As a basis for understanding
this concept and addressing the content in the other three strands,
students should develop their own questions and perform investigations.
- Repeat observations to improve accuracy and know that
the results of similar scientific investigations seldom
turn out exactly the same because of differences in the
things being investigated, methods being used, or uncertainty
in the observation.
- Differentiate evidence from opinion and know that scientists
do not rely on claims or conclusions unless they are backed
by observations that can be confirmed.
- Use numerical data in describing and comparing objects,
events, and measurements.
- Predict the outcome of a simple investigation and compare
the result with the prediction.
- Collect data in an investigation and analyze those data
to develop a logical conclusion.