Texas TEKS 1.2.D

Science1st 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 name what an object should do and the rules it must meet. They test it, observe what happens, and use those results to decide whether it succeeds.
What Mastery Looks Like: A student can test an object fairly against clear criteria. The student gives a decision and points to an observation that supports it.
Common Misconceptions: Students may decide based on color, size, or personal preference instead of the criteria. They may also call an object successful after one partial success or change the rules after testing.
How to Assess It: Exit ticket: A holder must keep three crayons upright for 10 seconds. Demonstrate a test, then have students circle works or not yet and record one observation.

Lesson moves

Build paper bridges, then test whether each bridge holds 10 counters across a 20-centimeter gap without collapsing.
Show two cup towers and ask, “Which one better holds a book, and what observation supports your choice?”
Play Criteria Match by pairing object cards with test cards, then labeling each demonstrated object pass or not yet.
Inspect classroom pencil boxes using three criteria: closes fully, holds five pencils, and can be carried without spilling.

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