Fall-Inspired Montessori Odd and Even Activity (Cards and Counters) for Preschoolers

Teach odd and even numbers the Montessori way with this hands-on fall-inspired Cards and Counters activity for preschoolers ages 3–5.

Fall-Inspired Montessori Odd and Even Math activity (also called Cards and Counters) concretely teaches a child what number is odd and what number is even, a concept which can otherwise seem very abstract to a child.

One of the things I love most about Montessori math is that it turns big, abstract ideas into something a child can actually see and touch.

Odd and even numbers are a perfect example. Simply telling a child that “odd numbers can’t be divided into pairs” doesn’t mean much at first. But when they build each number with real objects and discover that one little leaf is left without a partner, the concept suddenly clicks.

In this fall-inspired version of the classic Montessori Cards and Counters lesson, we swapped the traditional red counters for colorful maple leaves. It’s a simple seasonal twist that makes the activity feel fresh while preserving the purpose of the original Montessori material.

This activity is best for children who already recognize numbers 1–10 and are ready to explore quantity in a more meaningful way.

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What Is the Montessori Cards and Counters Lesson?

The Montessori Cards and Counters lesson is a foundational math activity that helps children connect numerals with quantities while introducing the concept of odd and even numbers.

Instead of memorizing which numbers are odd or even, children physically build each number using pairs of counters.

As they work, they naturally notice two patterns:

• Even numbers form complete pairs.
• Odd numbers always leave one counter without a partner.

This visual discovery is exactly why Montessori materials are so effective—they allow children to uncover patterns for themselves instead of simply being told the answer.

First, place numbers randomly on the rug and ask your child to set numbers one through ten horizontally at the top of the rug. (You want to make sure that your child knows numbers one through ten before introducing the concept of odd and even.) Then ask your child to place counters under each number, corresponding to that number’s quantity.

Why This Activity Works:

Maria Montessori believed that young children learn best through concrete experiences before moving into abstract thinking.

When children place counters beneath each numeral, they’re practicing several important early math skills at once:

• One-to-one correspondence
• Number recognition
• Quantity matching
• Pattern recognition
• Logical reasoning
• Visual discrimination

Research on early childhood mathematics consistently shows that hands-on experiences with quantity help build stronger number sense, which becomes the foundation for later mathematical learning.

Fall-Inspired Odd and Even Materials You’ll Need:

ou can use traditional Montessori materials or create your own with items you already have at home.

You’ll need:

• Numeral cards 1–10
• 55 counters total
• A rug or mat for arranging the activity

Fall-Themed Counter Ideas:

Instead of traditional red wooden counters, try using:

• Maple leaf cutouts
• Small wooden leaves
• Acorns (large enough to avoid choking hazards)
• Felt leaves
• Pebbles painted in autumn colors
• Mini pinecones (with supervision)

The seasonal materials don’t change the math—they simply make the invitation more engaging.

You can use traditional Montessori Numerals and Counters material (buy here) or you can make it yourself: you would need numbers 1-10 and 55 counters (use marbles, wooden dots, holiday-inspired small objects, etc). We are using fall-inspired maple leaves instead of traditional red wooden counters.

How to Set Up the Activity:

Before introducing odd and even numbers, make sure your child can confidently identify numerals 1–10.

Then:

1. Place the numeral cards randomly on the rug.
2. Invite your child to arrange them in order from 1 to 10 across the top.
3. Place all the leaf counters in a basket nearby.
4. Demonstrate placing counters beneath each numeral, arranging them in two vertical columns to create pairs.

This paired arrangement is an important part of the Montessori presentation because it allows children to clearly see whether every counter has a partner.

This presentation makes it very obvious for a child to see when a number has a counter without a pair/on its own: meaning that the number is odd. As opposed to, when all counter-leaves have a complete set of pairs – meaning that the number is even.

How to Present the Lesson:

Work slowly and allow your child to do most of the counting.

For each number:

• Count aloud as each leaf is placed.
• Arrange the leaves in pairs.
• Pause after each number and observe together.

When you reach numbers like 3, 5, 7, and 9, one leaf remains without a partner.

Instead of immediately labeling it, you might ask:

“What do you notice?”

Children often discover the pattern themselves.

Once they’ve observed several examples, you can introduce the vocabulary:

• Odd numbers have one counter without a partner.
• Even numbers have complete pairs.

This makes the language meaningful because it’s attached to something they’ve already experienced.

See here “Odd & Even (Montessori Math 101 Series)” a video-post where Adrian summarizes how to determine which number is odd and which one is even.

See here our Christmas Odd and Even lesson.

p.s. The Montessori math curriculum is generally introduced in the following order: (1) Number Rods (introduce at around two years of age), then (2) Sandpaper Numbers, (3) Spindle Box, (4) Numbers Memory Game, (5) followed by Odd and Even activity as shown above.

For More Odd and Even Numbers Activities,

Click Here.

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