Texas TEKS 4.2.C

Science4th GradeScientific and engineering practices

The Standard

use mathematical calculations to compare patterns and relationships

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students organize measurements in tables, then add, subtract, multiply, or divide to compare results. They use their calculations to describe a pattern or relationship in the data.
What Mastery Looks Like: Students choose a calculation that fits the data and show their work with correct units. They explain what the result reveals about how two quantities change or compare.
Common Misconceptions: Students may describe what they notice without calculating, or use the wrong operation. They may compare numbers from different trials, omit units, or claim a pattern from only one result.
How to Assess It: Give this exit ticket: A car travels 30, 60, and 90 centimeters on tile and 15, 30, and 45 centimeters on carpet. Calculate each trial’s difference and describe the relationship.

Lesson moves

Measure a toy car’s distance on tile, carpet, and cardboard, then calculate differences between surfaces and identify a pattern.
Use the prompt, “What calculation best proves the pattern in this data table?” Students write a claim and support it with numbers.
Play Data Detective with measurement cards, where pairs choose an operation, calculate comparisons, and earn points for accurate pattern statements.
Compare daily high temperatures from two cities for one week, calculate the differences, and describe how the temperatures change together.

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