Texas TEKS 7.7.A

Science7th GradeForce, motion, and energy

The Standard

calculate average speed using distance and time measurements from investigations

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students measure how far an object travels and how long the trip takes. They divide total distance by total time and report the result with correct units.
What Mastery Looks Like: Students can select distance and time data from a trial, use speed = distance ÷ time, and calculate accurately. They can compare trials and explain that average speed does not mean constant speed.
Common Misconceptions: Students may divide time by distance or omit units. They may average separate distance and time values incorrectly, or confuse average speed with speed at one moment.
How to Assess It: Give this exit ticket: A toy car travels 6 meters in 4 seconds. Find its average speed and show the equation, substitution, and units.

Lesson moves

Release toy cars down a ramp, measure a marked course with meter tape, time each run, then calculate and compare results.
Show two runners' distance and time data, then ask students to defend which runner was faster using calculations and units.
Give pairs cards showing distance and time to match with speed cards, then have them verify each match by division.
Use a 100-meter race time to calculate a runner's average speed, then compare the result with classmates' walking speeds.

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