Science Worksheets and Study Guides Third Grade. What are Ecosystems?

The resources above correspond to the standards listed below:

Tennessee Standards

TN.2. Life Science: Interdependence
CS.2. All life is interdependent and interacts with the environment.
GQ.2. How do living things interact with one another and with the non-living elements of their environment?
0307.2. Checks for Understanding
0307.2.2. Label a drawing of an environment to illustrate interrelationships among plants and animals.
0307.2.3. Construct a diagram to demonstrate how plants, animals, and the environment interact to provide basic life requirements
GLE.0307.2. Grade Level Expectations
GLE.0307.2.2. Explain how organisms with similar needs compete with one another for resources.
SPI.0307.2. State Performance Indicators
SPI.0307.2.2. Determine how plants and animals compete for resources such as food, space, water, air, and shelter.
TN.3. Life Science: Flow of Matter and Energy
CS.3. Matter and energy flow through the biosphere.
GQ.3. What scientific information explains how matter and energy flow through the biosphere?
0307.3. Checks for Understanding
0307.3.1. Label a diagram to illustrate the food relationships that exist between plant and animals.
0307.3.2. Create a chart to show how plants and animals satisfy their energy requirements.
0307.3.4. Use a piece of text to obtain basic information about how plants and animals obtain food.
SPI.0307.3. State Performance Indicators
SPI.0307.3.2. Recognize that animals obtain their food by eating plants and other animals.
TN.4. Life Science: Heredity
CS.4. Plants and animals reproduce and transmit hereditary information between generations.
GQ.4. What are the principal mechanisms by which living things reproduce and transmit information between parents and offspring?
0307.4. Checks for Understanding
0307.4.1. Sequence diagrams that illustrate various stages in the development of an organism.
0307.4.2. Create a timeline to depict the changes that occur during an organism's life cycle.
0307.4.3. Differentiate among the stages in the life cycle of a butterfly, mealworm, frog, and plant.
GLE.0307.4. Grade Level Expectations
GLE.0307.4.1. Identify the different life stages through which plants and animals pass.
SPI.0307.4. State Performance Indicators
SPI.0307.4.1. Select an illustration that shows how an organism changes as it develops.
TN.5. Life Science: Biodiversity and Change
CS.5. A rich variety of complex organisms have developed in response to a continually changing environment.
GQ.5. How does natural selection explain how organisms have changed over time?
0307.5. Checks for Understanding
0307.5.3. Describe how environmental factors change over place and time.
0307.5.4. Determine how changes in an environmental variable can affect plants and animals of an area.
0307.5.5. Construct a diorama that shows plants and animals in an appropriate environment.