Bead Stair Subtraction

Bead bar subtraction provides a tactile approach to finding differences, grounding the concept before abstract fact memorization.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Operations
• Level: Ages 4-5

Objectives

• Subtract single-digit numbers concretely
• Understand subtraction as difference
• Build subtraction fact awareness

Materials

• Short bead stair (bead bars 1-9)
• Work mat
• Recording sheet

Instructions

1. Place 7-bar (white). 2. 'Take away 3.' Place 3-bar below aligned at left. 3. Count uncovered beads: 4. 4. 'Seven take away three is four.' 5. Verify with 4-bar. 6. Record: 7 - 3 = 4. 7. Practice multiple combinations.

Educator tip

Aligning bars at the left and seeing the 'difference' on the right visually shows subtraction as comparison.

Assessment

Child subtracts using bead bars and records equations.

More from Mathematics

• Number Scroll (1-1000)
• Teens and Tens with Bead Bars
• Fraction Skittles
• Fraction Nomenclature
• Geometric Cabinet
• Perimeter Exploration
• Area Introduction with Unit Squares
• Place Value Chart Building