Texas TEKS 7.5.G

Science7th GradeRecurring themes and concepts

The Standard

analyze and explain how factors or conditions impact stability and change in objects, organisms, and systems.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students identify a factor that affects an object, organism, or system. They compare evidence before and after the factor changes, then explain the cause-and-effect relationship.
What Mastery Looks Like: Students can name the changing condition, describe its effect, and support the explanation with evidence. They can also predict what may happen if that condition increases, decreases, or stays constant.
Common Misconceptions: Students may treat two events happening together as proof that one caused the other. They may think stability means no movement or change, or assume that one factor always produces the same result.
How to Assess It: Exit ticket: A pond receives half its usual rainfall for six weeks. Predict one change in the pond system, name the affected part, and explain the cause-and-effect link.

Lesson moves

Build two index-card towers, change only the base width, test each with a fan, and record which condition improves stability.
Write a claim explaining how a week of high temperatures could change a classroom terrarium, using two observations as evidence.
Play Factor, Effect, Evidence by matching scenario cards with likely system changes and evidence that would support each match.
Examine local drought data and predict how watering limits could affect lawns, reservoirs, and city water use.

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