Math3-5
Linear Function Patterns: Input-Output Tables for Grade 3
By Face M.
A short practice set that introduces input-output tables and the idea of a function rule, asking students to use a given rule like y = 2x + 1 to complete missing outputs and spot patterns. It's best suited to a focused math block where students work through the table with support from the key-terms callout and the worked example.
Customize for your classroom
Teacher Guide & Tips
- Introduce the function-machine idea first with a physical or drawn example (drop in a number, something happens, a new number comes out) before students open the table.
- Discussion question: If the input goes up by 1 each time, what happens to the output in the table, and why?
- Scaffold for struggling readers: have students read the key terms aloud, then complete the worked example together, multiplying by 2 first and then adding 1 on a number line or with counters.
- Extension for advanced students: ask them to write their own rule for a new table with a different multiplier and constant, then trade with a partner to check each other's outputs.
- Estimated time: about 30 to 40 minutes, including the example and the practice table.
Math3-5
Linear Function Patterns: Input-Output Tables for Grade 3
By Face M.
A short practice set that introduces input-output tables and the idea of a function rule, asking students to use a given rule like y = 2x + 1 to complete missing outputs and spot patterns. It's best suited to a focused math block where students work through the table with support from the key-terms callout and the worked example.
Customize for your classroom
Teacher Guide & Tips
- Introduce the function-machine idea first with a physical or drawn example (drop in a number, something happens, a new number comes out) before students open the table.
- Discussion question: If the input goes up by 1 each time, what happens to the output in the table, and why?
- Scaffold for struggling readers: have students read the key terms aloud, then complete the worked example together, multiplying by 2 first and then adding 1 on a number line or with counters.
- Extension for advanced students: ask them to write their own rule for a new table with a different multiplier and constant, then trade with a partner to check each other's outputs.
- Estimated time: about 30 to 40 minutes, including the example and the practice table.