Texas TEKS 8.2.A
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 This Standard Means
What Students Need to Do
- Students compare a model with the object, system, or process it represents. They explain how size, scale, properties, and materials make the model useful or misleading.
What Mastery Looks Like
- Students can examine a model and name a specific advantage and limitation with evidence. They can also choose which of two models better fits a given purpose.
Common Misconceptions
- Students may think a model is an exact copy or that more detail always makes it better. They may also assume the model's materials behave like the real object's materials.
How to Assess It
- Show students a plastic model of a cell. Ask them to name one advantage and one limitation related to size, scale, properties, or materials.
Lesson moves
Ways to Teach It
Build a clay cell model, then label one useful feature and two limits caused by scale, material, or missing properties.
Compare a globe and flat map, then write which is better for measuring distance and which features each distorts.
Sort model cards into useful and misleading piles, then defend each choice using size, scale, properties, or materials.
Examine a local weather forecast map and identify one decision it supports and one condition it cannot predict exactly.
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Printable 8.2.A Worksheet
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Related Standards
- 7.2.A
identify advantages and limitations of models such as their size, scale, properties, and materials;
- 3.2.A
identify advantages and limitations of models such as their size, scale, properties, and materials;
- 5.2.A
identify advantages and limitations of models such as their size, scale, properties, and materials;
- 4.2.A
identify advantages and limitations of models such as their size, scale, properties, and materials;
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