CONSTANT IN AND OUT
addition · addition input/output tables with a constant addend
To complete the addition input/output tables with sums to 20
CONSTANT IN AND OUT is a Grade 2 addition game built around input-output tables. A shared card sets the constant addend for the round, then students draw input values and calculate the matching outputs until the table is complete. Repeating the same addend across several inputs helps students notice a consistent relationship instead of treating each sum as unrelated.
Use it for partner or small-group practice with sums to 20 and early function-table thinking. Ask students to describe what stays the same and what changes from row to row. Create a free Find a Math Game account to generate teacher-ready lesson support for CONSTANT IN AND OUT. No credit card; free accounts include 3 lifetime lesson generations.
- Grades:
- 2
- Players:
- 2 or more players
- Materials:
- cards, printable
- Classroom use:
- small group, partner work
Standards alignment
Official Rules
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Original Printable
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