Texas TEKS 6.1.H

Science6th GradeScientific and engineering practices

The Standard

distinguish between scientific hypotheses, theories, and laws.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students sort scientific claims by their purpose and level of support. They recognize a testable proposed explanation, a broad evidence-based explanation, and a statement describing a consistent pattern.
What Mastery Looks Like: Given unfamiliar examples, students classify each one and justify the choice using evidence, testing, explanation, or pattern. They explain that theories do not turn into laws.
Common Misconceptions: Students often think a theory is just a guess or that enough proof turns a theory into a law. They may also think laws explain why patterns occur.
How to Assess It: Exit ticket: Classify each statement and explain why: “More light will increase bean growth,” plate tectonics, and Newton’s third law.

Lesson moves

Give pairs cards with sample claims, then have them sort the cards into hypothesis, theory, and law groups with written reasons.
Ask students to explain why a well-supported theory does not become a law, using one scientific example.
Play a three-corner game where students move to the matching label after each claim is read and defend their choice.
Examine disease research through a transmission hypothesis, germ theory as an explanation, and gas laws that describe breathing patterns.

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