Texas TEKS 2.2.D

Science2nd GradeScientific and engineering practices

The Standard

evaluate a design or object using criteria to determine if it works as intended.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students test an object using a short list of requirements. They observe the results, decide whether it worked, and support that decision with evidence.
What Mastery Looks Like: A student checks each requirement instead of relying on personal preference. The student names what worked, what failed, and one change that could improve the design.
Common Misconceptions: Students may say an object works because they like its color or appearance. They may test it once, ignore a failed requirement, or suggest changes without using test results.
How to Assess It: Give students a paper cup that must hold 10 cubes and remain standing. Ask them to test it and write whether it meets both requirements, using observations.

Lesson moves

Build a paper bridge, then test whether it spans 20 centimeters and holds five counters for ten seconds.
After testing a foil boat, write: Did it meet each requirement, and what evidence supports your decision?
Play Design Inspector with object cards and requirement cards, earning a point for each evidence-based evaluation.
Examine classroom pencil holders for capacity, stability, and easy access, then recommend the best one for a shared table.

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