Montessori · Mathematics

Stamp Game Subtraction

Stamp Game subtraction moves the concrete borrowing concept from Golden Beads to a more abstract representation, bridging toward written subtraction.

Objectives

Materials

Instructions

1. Build minuend with stamps. 2. 'Take away' subtrahend from each category. 3. Exchange when needed: trade 1 ten-stamp for 10 unit-stamps. 4. Count remaining stamps. 5. Record result. 6. Write equation on paper.

Educator tip

When exchanging, physically remove 1 stamp from the higher category and replace with 10 of the lower. The visual is powerful.

Assessment

Child performs dynamic subtraction with stamps and records on paper.

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