Odd and Even Numbers: Pairs, Doubles and Counting by 2s

About This Resource

A free Grade 2 lesson and worksheet on odd and even numbers: making pairs with objects up to 20, counting by 2s, writing even numbers as doubles and using the ones digit. Includes a timed lesson plan, a seven-activity worksheet, an editable Word version and an answer key.

Overview

Students find out whether a group of objects is odd or even by making pairs: if one is left over, the number is odd. They count by 2s, write even numbers as the sum of two equal addends (such as 14 = 7 + 7), and discover that the ones digit tells us whether any number is odd or even. Every math answer in the pack is calculated by the generator and checked automatically.

Resource Details

Subject: Math
Topic: Odd and Even Numbers
Category: Number Sense
File Type: PDF
File Size: 266.7 KB
Published: 26 Oct 2026
Downloads: 0

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Grade 2 (ages 7–8) 45 minutes Number sense counting by 2s doubles reasoning and explaining

Student Task

Teach the lesson with counters or cubes following the lesson plan.
Do activities 1–3 together, then let students finish activities 4–7 on their own.
Check the work with the answer key; use activity 7 to hear each student's reasoning.

Classroom Use

Partner check: call out a number of students; they try to make pairs and decide if the number is odd or even.
Stand or sit: say a number; students stand up for even and stay seated for odd.
Sock sort: give groups a pile of socks and ask them to find out if there is an odd or even number.

Differentiation

Support: give students counters for activities 1 and 3 and a hundred chart for activity 4. Challenge: ask students to explain what happens when you add two odd numbers.

Answer Key & Assessment

Activities 1–6 check pairing, counting by 2s, doubles and the ones digit (answer key included). Activity 7 shows whether students can explain their reasoning.

Learning Objectives

Decide whether a group of up to 20 objects is odd or even by making pairs or counting by 2s.
Write an even number as the sum of two equal addends (a double), such as 12 = 6 + 6.
Use the ones digit to tell whether a 2-digit number is odd or even.

Teacher Tips

Let students touch and move counters before they use the ones digit rule. Ask "Is anyone left without a partner?" so the idea of odd and even stays concrete.

What's Included

7-page printable PDF lesson pack: teacher lesson plan with timings, materials and differentiation
Key vocabulary list (6 words with meanings and examples)
Student worksheet (7 activities)
Editable Word version of the worksheet
Complete answer key (also as a separate PDF)