Virginia SOL LS.1.d.i

ScienceGrades 7–8Life Science

The Standard

construct explanations that include qualitative or quantitative relationships between variables

Virginia Standards of Learning for Science · The student will demonstrate an understanding of scientific and engineering practices by

Teacher's field guide

What This Standard Means

What Students Need to Do

Students explain how one variable changes in relation to another using observations, measurements, tables, or graphs. They describe patterns with words or numbers. They also check whether an explanation matches the evidence and avoids unsupported claims.

What Mastery Looks Like

A student correctly identifies both variables and describes the direction or size of the relationship. The student cites specific data and explains whether the evidence shows association or supports causation.

Common Misconceptions

Students may list results without explaining the relationship. They may reverse the variables, treat any correlation as causation, or use vague phrases such as "it changed." Some calculate a difference or rate but never connect it to the biological question.

How to Assess It

Exit ticket: A plant receives 2, 4, or 6 hours of light and grows 1, 3, or 5 centimeters. Explain the relationship, cite a quantitative pattern, and state whether the data prove causation.

Lesson moves

Ways to Teach It

  1. Students measure pulse rates after zero, one, and two minutes of stepping, graph the results, and explain the relationship.

  2. Show a graph of light level and plant growth, then ask students to write which variable changes and how.

  3. Play a card sort matching data tables, relationship statements, and evidence-based explanations.

  4. Compare local temperature and mosquito-count data, then write a cautious explanation that separates association from cause.

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