Fourth Grade Science

Nature’s Recyclers

Science Content

Cluster 1:  Organic Remains

  • Nature’s waste and remains don’t just pile up. They decompose.

Cluster 2:  Nature’s Recyclers

  • Nature’s recyclers—scavengers, fungi, and bacteria—feed on dead organisms and waste. They carry out the process of decomposition.

Cluster 3:  Recycling Nutrients

  • Nature’s recyclers return nutrients to the soil (or water) for use by plants and other organisms.



Science Content

Cluster 1:  Properties of Matter

  • Matter commonly exists in one of three states: solid, liquid, or gas.
  • Some properties help us classify matter as solid, liquid, or gas.
  • All matter takes up space (has a volume) and has mass (which we usually measure by weight).
  • Materials can be described in terms of their properties (e.g., size, weight, color, density).
  • Properties can be measured using tools.
  • When recording measurements, always include the unit of measurement.
  • When you change the shape of a solid or a liquid, its weight and volume remain the same.
  • Investigative questions, predictions, clear procedures, observations, and conclusions are basic elements of scientific investigations.
  • Field guides are used to identify rocks and learn more about their properties.

Cluster 2:  Changing States of Matter

  • Matter can change between states.
  • Temperature affects the change of matter from one state to another.
  • Even if matter is not visible, it still exists.
  • Weight does not change between solid and liquid states.
  • Water that has evaporated is water vapor in the air.
  • Water condenses on cold surfaces.
  • In a fair test, the experimenter changes one variable while keeping all other variables the same.


Cluster 3:  Mixing Matter

  • When you mix materials together, the result weighs the same as the sum of the parts.
  • A mixture can often be separated by the properties of the different materials. Sometimes when you mix materials together, you get a new material with different properties.



Watery Earth

Science Content

Cluster 1:  Water Is a Resource

  • A natural resource is something we get from our environment to meet our wants and needs.
  • Water is a natural resource that is essential for life.
  • Living things use and need water in different ways.
  • Humans have devised methods to access and clean water.
  • Most people in the United States use more water than they need to survive.

Cluster 2:  Water Follows a Cycle

  • Water covers about two-thirds of Earth’s surface.
  • Nearly all of the world’s water is contained in the salty oceans.
  • Most of Earth’s fresh water is stored underground and in glaciers and polar ice caps; a tiny fraction is in the air.
  • A small fraction of Earth’s fresh water is accessible by humans.
  • Earth’s water circulates around the water cycle through these processes: evaporation, condensation, precipitation, and percolation.

Cluster 3:  Taking Care of Water Resources

  • Since there is a limited supply of water on Earth, we should conserve and protect it.
  • We can conserve water by using less of it and by using it more efficiently.
  • We can protect water by preventing pollutants from entering the water cycle, and by cleaning water that has been polluted.
  • Pollutants are often difficult to remove from water.
  • Water pollution can harm living organisms and their habits.

Other Resources

State Science Grade Level Content Expectations for Fourth Grade

District Hands-On Elementary Science Brochure

Fourth Grade Skills Sheet 27kb PDF

Fourth Grade Report Form 497kb PDF


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