Count by 2s (187)

Teaching Notes

Focus on building sequences of odd numbers by adding 2 to the previous number, starting from 1. Use a number line or chart to visualize the pattern of odd numbers. Emphasize that adding 2 to an odd number always results in another odd number.

Vocabulary

Skip counting: Counting by a given number.

Even numbers: Numbers divisible by 2.

Common Mistakes

• Confusing with counting by 2s starting from 0/2 (even numbers)
• Losing track of counting by 2s and adding 1 instead
• Incorrectly identifying the next odd number

Differentiation

Discussion Questions

• What do you notice about all the numbers when you count by 2s starting from 1?
• Are these numbers even or odd? How do you know?
• Can you predict the next number in the sequence?
• Where do you see patterns when you count this way?

Extension Activities

• Count by 2s on a number line.
• Identify even numbers.
• Clap twice for each number.

Parent Tip

Have your child point to every second object in a line.

Skill Cluster

Number Sense and Operations

Estimated Time

15 minutes

Skills Practiced

Prerequisites

• Counting by 1s (1-20)
• Number recognition (1-20)
• Concept of 'one more'

Next Steps

• Count by 2s (even numbers)
• Identifying Even and Odd Numbers
• Counting by 2s to higher numbers
• Introduction to repeated addition