Number Line: Number Pairs [TEKS Tools Grade 3]

This post specifically looks at how number lines can be used to explore number pair relationships in real-world scenarios. Read more about TEKS Tools and their rationale here.

Number Pairs

Number lines, the second TEKS Tool, account for around 22% of each 3rd grade STAAR test. Within this tool are many uses: representing and comparing fractions, interpreting number pair relationships, and solving problems involving rounding and the operations.

The main function of a number line is to show the relationship between fractional quantities, number pairs, or as a tool for rounding and estimation. By visualizing these quantities on number lines, students can better make sense of the how the quantities are related.

Number Pairs

Number pairs are the foundation of input-output tables, graphing on a coordinate plane, and proportionality. Utilizing a double number line provides a consistent tool that students can use all through high school to understand proportional relationships.

3.5E - represent real-world relationships using number pairs in a table and verbal descriptions

Students are asked to interpret a real-world relationship and describe it in words.

Click on each > to expand

2023-12: a relationship was given in a verbal description and table, students had to interpret it

2023-19: a relationship was given in a verbal description and table, students had to interpret it

2025-4: a relationship was given in a verbal description and table, students had to interpret it

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3.5E - represent real-world relationships using number pairs in a table and verbal descriptions

Students are also asked to interpret a real-world relationship and represent it in a table.

Click on each > to expand

2024-13: a relationship was given in a verbal description, students had to match it to the correct tabular representation

2025-17: a relationship was given in a verbal description, students had to match it to the correct tabular representation