Virginia SOL 3.8.c

Science3rd GradeEarth Resources

The Standard

fire, flood, disease, and erosion affect ecosystems

Virginia Standards of Learning for Science

Teacher's field guide

What Students Need to Do: Students identify how fires, floods, disease, and erosion change habitats and living things. They explain cause and effect, including damage, movement, death, and recovery.
What Mastery Looks Like: Given a photo or short event description, students name ecosystem changes and explain why they happened. They predict a likely effect on plants or animals.
Common Misconceptions: Students may think every disturbance destroys an ecosystem forever or affects only animals. They may also confuse erosion with flooding or think disease affects only humans.
How to Assess It: Show a picture of a flooded forest. Ask students to name one habitat change and explain one likely effect on an organism.

Lesson moves

Pour water over trays of bare soil and grass-covered soil, then compare erosion and where the soil collects.
Show two forest photos, one before and one after a fire, and ask students to write three cause-and-effect statements.
Give teams event, habitat, and effect cards to match, then require an oral explanation for each match.
Read a local report about flooding or erosion, then mark the affected plants, animals, soil, and water on a simple map.

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