Texas TEKS 3.2

3.2 is a TEKS knowledge and skills statement. These are the student expectations under it.

• 3.2.A

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

• 3.2.B

  analyze data by identifying any significant features, patterns, or sources of error

• 3.2.C

  use mathematical calculations to compare patterns and relationships

• 3.2.D

  evaluate a design or object using criteria.

01

What Students Need to Do

Students explain what a model shows well and where its size, scale, materials, or missing details make it less accurate. They inspect data for patterns and unusual results, use simple calculations to compare results, and judge designs against stated criteria.

02

What Mastery Looks Like

Given a model, the student names one useful feature and one limit tied to its construction. Given test results, the student calculates totals or differences, describes a pattern, spots a possible measurement error, and uses criteria to choose a design.

03

Common Misconceptions

Students may think a model is a perfect copy or that a larger model is always better. They may treat one unusual result as a pattern, ignore inconsistent trials, or choose a favorite design without checking the criteria.

04

How to Assess It

Exit ticket: A paper bridge held 8, 9, and 8 cubes, while a foil bridge held 5, 14, and 6. Students total each set, flag a possible error, choose the better bridge for a 7-cube goal, and name one limitation of the test.

1. 01

   Build two paper bridges, test each with pennies, record three trials, then choose the design that meets a stated load goal.

2. 02

   Compare a globe and a flat map, then write one advantage and one limitation of each model.

3. 03

   Play Data Detective with result cards, awarding points for finding patterns, calculating differences, and spotting measurements that may contain errors.

4. 04

   Score three reusable lunch containers for capacity, leak resistance, and cost, then recommend one using the completed scorecard.

• 1.2

  The 1st Grade version of this standard.

• 2.2

  The 2nd Grade version of this standard.

• 6.2

  The 6th Grade version of this standard.

• 5.2

  The 5th Grade version of this standard.