Skip Counting by 2s (175)

Teaching Notes

Skip counting by 2s is the foundation for multiplication and understanding even numbers. Encourage students to use a number line or hundreds chart initially.

Vocabulary

Skip Counting: Counting numbers by a fixed amount.

Sequence: Numbers in a specific order.

Common Mistakes

• Skipping a number (e.g., 2, 4, 5, 6)
• Losing track when crossing tens (e.g., 18, 20, 21 instead of 22)
• Confusing the pattern with counting by 1s
• Forgetting to skip a number, essentially counting by ones
• Losing track of the sequence when counting beyond familiar numbers
• Confusing the pattern with skip counting by other numbers (e.g., 5s)
• Counting by ones instead of twos after an initial skip
• Missing numbers in the sequence, especially across decades
• Confusing skip counting by 2s with skip counting by 5s or 10s

Differentiation

Discussion Questions

• What pattern do you notice in the ones place when we count by 2s?
• Why is skip counting faster than counting by 1s?
• If we start at 0 and count by 2s, will we ever say the number 11? Why or why not?
• What do you notice about the numbers when you skip count by 2s?
• Can you think of a time when you might skip count by 2s in everyday life?
• How is skip counting by 2s different from counting by 1s?
• What do you notice about all the numbers we say when we skip count by 2s?
• Can you think of anything in our classroom or at home that comes in pairs?
• If we skip count by 2s, what number comes after 20? How do you know?

Extension Activities

• Have students pair up objects in the classroom and count the total.
• Play 'Buzz' where students stand in a circle and count, clapping on multiples of 2.

Parent Tip

Count objects in pairs, like socks or gloves, with your child.

Skill Cluster

Number Sense & Operations

Estimated Time

20 minutes

Skills Practiced

Prerequisites

• Print the numbers (1-20)
• Numbers & number words
• Counting by 1s (to 20+)
• Number recognition (to 100)
• Counting by 1s (to 100)
• Number Recognition (to 100)

Next Steps

• Skip Counting by 5s
• Skip Counting by 10s
• Identifying Even and Odd Numbers
• Introduction to Multiplication (Groups of 2)
• Repeated Addition