Texas TEKS 6.2

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

• 6.2.A

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

• 6.2.B

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

• 6.2.C

  use mathematical calculations to assess quantitative relationships in data

• 6.2.D

  evaluate experimental and engineering designs.

01

What Students Need to Do

Students judge how a model’s size, scale, properties, and materials affect what it can show. They find patterns, unusual values, errors, and limits in data. They use calculations to compare results and decide whether an experiment or design works well.

02

What Mastery Looks Like

Students can name a useful feature and a limitation of a model. They calculate values such as mean, range, difference, or ratio and use them to explain a pattern. They support a design decision with data and suggest a specific improvement.

03

Common Misconceptions

Students may treat a model as an exact copy or assume a larger model is always better. They may ignore outliers, claim that correlation proves cause, or remove inconvenient results. They may judge a design by appearance rather than test data.

04

How to Assess It

Exit ticket: A bridge model holds 8, 10, 10, and 22 washers across four trials. Find the mean and range, identify a possible error, name one model limitation, and recommend whether to retest or redesign.

1. 01

   Build two foil boat models, test their washer capacity, calculate mean loads, and identify how material or size limits each model.

2. 02

   Show a scatterplot and ask students to write one observed relationship, one unsupported claim, and one possible source of error.

3. 03

   Give teams cards showing patterns, correlations, outliers, errors, and design limits, then race to sort and justify each card.

4. 04

   Compare forecast temperatures with recorded temperatures, calculate each difference, and recommend one way to improve the weather model.

• 1.2

  The 1st Grade version of this standard.

• 3.2

  The 3rd Grade version of this standard.

• 2.2

  The 2nd Grade version of this standard.

• 5.2

  The 5th Grade version of this standard.