Texas TEKS 3.1.G

Science3rd GradeScientific and engineering practices

The Standard

develop and use models to represent phenomena, objects, and processes or design a prototype for a solution to a problem.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students build, draw, or use a model to show how something works, changes, or is arranged. They use observations to explain and revise the model or prototype.
What Mastery Looks Like: Students include parts that help explain the object, event, or process. They can explain how the parts connect, test their work, and name one limitation or needed change.
Common Misconceptions: Students may treat a model as a decoration or exact copy instead of an explanation. They may think a prototype must work on the first try or include details unrelated to the problem.
How to Assess It: Exit ticket: Draw a model showing what happens when a puddle dries. Add labels and arrows, then write one sentence explaining the change.

Lesson moves

Use clay, cups, and straws to build a model showing how water flows downhill, then revise it after a test.
Show two seed dispersal models and ask, "Which parts explain movement, and what does each model leave out?"
Play Model Match: students pair picture models with phenomena cards, then justify each match using one visible feature.
Design a foil shade prototype that keeps an ice cube cool, test it under a lamp, and improve one feature.

Free download

A ready-to-print activity worksheet aligned to 3.1.G, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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