4.5.B

Math4th Grade

The Standard

represent problems using an input-output table and numerical expressions to generate a number pattern that follows a given rule representing the relationship of the values in the resulting sequence and their position in the sequence

Texas Essential Knowledge and Skills for Mathematics

Teacher's field guide

What This Standard Means

What Students Need to Do

Students connect each term's position to its value in a number pattern. They complete input-output tables and use the position number in a numerical expression to calculate terms.

What Mastery Looks Like

Students complete missing values in a table and explain how each position produces its value. They can find a later term by writing and evaluating an expression instead of extending the pattern one step at a time.

Common Misconceptions

Students may focus only on how much the terms increase and ignore the term's position. They may reverse the table columns or make an off-by-one error when the first value includes an added amount.

How to Assess It

Give positions 1, 2, and 3 with values 7, 11, and 15. Ask students to find the sixth value and write the numerical expression 4 × 6 + 3.

Lesson moves

Ways to Teach It

  1. Build growing cube towers, label each stage, record cube totals in a table, and write a numerical expression for stage 6.

  2. Compare 4, 7, 10 and 3, 6, 9, then explain why equal increases can still produce different position rules.

  3. Play Rule Detective with cards showing partial tables, and have pairs identify the rule and calculate two missing values.

  4. Use an $8 ticket price plus a $5 booking fee, then make a table for ticket quantities and total costs.

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