Texas TEKS 6.2.A

Science6th GradeScientific and engineering practices

The Standard

identify advantages and limitations of models such as their size, scale, properties, and materials

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students compare a model with the object, system, or process it represents. They explain what the model shows well and what it leaves out or changes.
What Mastery Looks Like: Students name a model’s useful features and specific limits. They connect each strength or limit to its size, scale, physical traits, or construction material.
Common Misconceptions: Students may think a realistic-looking model represents every feature accurately. They may confuse size with scale or assume model materials behave like the real materials.
How to Assess It: Show students a plastic skeleton model. Ask, “What does this model show well, and what limitation comes from its size or material?”

Lesson moves

Build a clay cell model, then label one feature the material shows well and one feature it cannot represent accurately.
Write: When would a map be more useful than a globe, and what information would each leave out?
Play Model Match by pairing model cards with strength and limitation cards, then defend each match to a partner.
Examine an architect’s floor plan and explain how its scale helps builders while its flat format hides height and materials.

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