Odd and Even Number Sorting

Building on Cards and Counters, this activity extends odd/even understanding to larger numbers and develops classification thinking.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Counting & Quantity
• Level: Ages 4-5

Objectives

• Classify numbers as odd or even
• Understand pairing as a test for even
• Extend odd/even to larger numbers

Materials

• Counters (30+)
• Numeral cards 1-20
• Sorting mat labeled 'Odd' and 'Even'

Instructions

1. Review odd/even with Cards and Counters layout. 2. Present new number (e.g. 14). 3. Count counters, arrange in pairs. 4. 'All paired—fourteen is even.' 5. Try 17: 'One left over—seventeen is odd.' 6. Sort numeral cards onto labeled mat.

Educator tip

Help children discover the pattern: numbers ending in 0, 2, 4, 6, 8 are always even.

Assessment

Child correctly classifies numbers 1-20 as odd or even with reasoning.

More from Mathematics

• Number Line Walk
• Bead Chain of 100
• Bead Chain of 1000
• Skip Counting Chains
• Teen Board Number Building
• Hundred Board Patterns
• Counting Backwards from 20
• The Bank Game