Subtraction Strip Board

The Subtraction Strip Board parallels the addition board, helping children see subtraction as the inverse of addition while building fact fluency.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Operations
• Level: Ages 5-6

Objectives

• Memorize subtraction facts
• Connect subtraction to addition
• Build subtraction fluency

Materials

• Subtraction Strip Board: numbered grid 1-18
• Blue strips
• Subtraction tables booklet

Instructions

1. Start at minuend on board (e.g. 8). 2. Place strip for subtrahend (e.g. 3). 3. Count back: answer is where you land (5). 4. Record: 8 - 3 = 5. 5. Verify: 5 + 3 = 8. 6. Work systematically through all tables.

Educator tip

Always connect to addition: 'If 3 + 5 = 8, then 8 - 3 = ?' This builds fact families.

Assessment

Child works through subtraction tables and connects to addition facts.

More from Mathematics

• Multiplication Bead Board
• Division Bead Board
• Word Problems with Golden Beads
• Addition Finger Charts
• Subtraction Finger Charts
• Multiplication Finger Charts
• Division Finger Charts
• Snake Game (Addition)