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Grade 4 Science · World 3: Food Web Forest · Level 21
When Things Change
Predict the effects of living and nonliving changes: drought, fire, flood, a new animal.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 21
- An ecosystem is all the living and nonliving things in a place, working together. When one thing changes, others change too.
- Some changes are nonliving: a drought, a flood, a fire, or pollution. A drought can dry up a pond, and the frogs and fish lose their home.
- Some changes are living: a new plant or animal moves in, or a disease spreads. Beavers build dams that turn streams into ponds!
- In Georgia, kudzu is a vine that spreads fast and covers trees, blocking their sunlight. One new plant changes a whole forest edge.
Georgia Standards of Excellence in Science:
- S4L1.c — Design a scenario to demonstrate the effect of a change on an ecosystem. (Clarification statement: Include living and non-living factors in the scenario.)