Adding 2 to Odd Numbers: A Fun Math Adventure!

Math Grades 1st Grade 3:50 Video
Print Lesson Plan Watch Video

Lesson Description

Learn how to add 2 to odd numbers using blocks and discover the patterns in math!

Video Resource

Grade 1: Math Lesson #58 Adding Two to An Odd Number

The Eagle's Nest - Our Online Classroom

Duration: 3:50
Watch on YouTube

Key Concepts

  • Odd numbers (1, 3, 5, 7, 9)
  • Even numbers
  • Adding 2 to a number
  • The pattern of odd + 2 = odd

Learning Objectives

  • Students will be able to identify odd numbers.
  • Students will be able to add 2 to odd numbers within 10.
  • Students will be able to recognize that adding 2 to an odd number results in another odd number.

Educator Instructions

  • Introduction (5 mins)
    Begin by reviewing what odd and even numbers are. Use blocks or manipulatives to visually represent odd and even numbers, as the video does. Ask students to identify odd and even numbers.
  • Video Viewing (5 mins)
    Watch the video "Grade 1: Math Lesson #58 Adding Two to An Odd Number". Pay attention to how the teacher uses blocks to demonstrate adding 2 to odd numbers.
  • Guided Practice (10 mins)
    After watching the video, practice adding 2 to odd numbers together as a class. Use blocks, drawings, or fingers to help students visualize the addition. Start with 1 + 2, then 3 + 2, 5 + 2, 7 + 2, and 9 + 2.
  • Independent Practice (10 mins)
    Give students a worksheet with addition problems where they need to add 2 to odd numbers. Encourage them to use the strategies they learned in the video, such as using blocks or drawing pictures.
  • Wrap-up (5 mins)
    Review the key concepts of the lesson. Ask students what they learned about adding 2 to odd numbers. Emphasize the pattern that adding 2 to an odd number always results in another odd number.

Interactive Exercises

  • Number Line Addition
    Use a number line to show adding 2 to odd numbers. Start at an odd number and hop two spaces forward. What number did you land on?
  • Block Building
    Give each student blocks or cubes. Have them create an odd number of blocks, then add two more. What number did they make now? Is it odd or even?

Discussion Questions

  • What is an odd number?
  • What happens when you add 2 to an odd number?
  • Can you think of some things you have two of?

Skills Developed

  • Addition skills
  • Number recognition (odd and even)
  • Problem-solving
  • Visual representation of numbers

Multiple Choice Questions

Question 1:

Which of these is an odd number?

Correct Answer: 5

Question 2:

What is 1 + 2?

Correct Answer: 3

Question 3:

What is 3 + 2?

Correct Answer: 5

Question 4:

What is 5 + 2?

Correct Answer: 7

Question 5:

What is 7 + 2?

Correct Answer: 9

Question 6:

What is 9 + 2?

Correct Answer: 11

Question 7:

When you add 2 to an odd number, do you get another odd number or an even number?

Correct Answer: Odd number

Question 8:

Which of these is NOT an odd number?

Correct Answer: 4

Question 9:

If you have 3 blocks and add 2 more, how many blocks do you have?

Correct Answer: 5

Question 10:

If you have 7 cookies and your friend gives you 2 more, how many cookies do you have?

Correct Answer: 9

Fill in the Blank Questions

Question 1:

The numbers 1, 3, 5, 7, and 9 are _____ numbers.

Correct Answer: odd

Question 2:

When we add, we _____ numbers together.

Correct Answer: put

Question 3:

1 + 2 = _____

Correct Answer: 3

Question 4:

3 + 2 = _____

Correct Answer: 5

Question 5:

5 + 2 = _____

Correct Answer: 7

Question 6:

7 + 2 = _____

Correct Answer: 9

Question 7:

9 + 2 = _____

Correct Answer: 11

Question 8:

The number 2 is an ______ number

Correct Answer: even

Question 9:

An even number can be split in ______.

Correct Answer: half

Question 10:

When you add two to an odd number the answer will always be an ____ number.

Correct Answer: odd

Educational Standards

CCSS.Math.Content.1.OA.C.6:Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). CCSS.Math.Content.1.OA.A.1:Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. CCSS.Math.Content.1.OA.C.5:Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Teaching Materials

Download ready-to-use materials for this lesson:

Student Worksheet Classroom Slides Assessment Quiz Export to Google Docs
Add to Google Classroom

User Actions

Sign in to save this lesson plan to your favorites.

Sign In

Share This Lesson

Related Lesson Plans