Counting by Tens to 90!

Math Grades 1st Grade 14:53 Video
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Lesson Description

Let's learn how to count by tens, all the way up to 90! We'll use beads and fun activities to understand how to count in groups of ten.

Video Resource

Learn Grade 1 - Maths - Introducing Numbers 1 to 30

KidsClassroom - Nursery Rhymes & Kids Songs

Duration: 14:53
Watch on YouTube

Key Concepts

  • Counting by tens
  • Place value (tens and ones)
  • Number recognition (10-90)

Learning Objectives

  • Students will be able to count by tens from 10 to 90.
  • Students will be able to identify numbers from 10 to 90 when counting by tens.
  • Students will understand that numbers like 20, 30, 40 are made up of groups of ten.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students if they know how to count by tens. Show them your fingers, and explain that 10 fingers make a group of ten. Briefly introduce the video and what they will learn.
  • Video Viewing (7 mins)
    Play the YouTube video: Learn Grade 1 - Maths - Introducing Numbers 1 to 30. Encourage students to count along with the video, especially when the beads are shown.
  • Discussion and Review (5 mins)
    After the video, ask students what they learned. Review the numbers 10, 20, 30, 40, 50, 60, 70, 80, and 90. Emphasize that each number represents a group of tens.
  • Activity: Counting with Objects (8 mins)
    Use objects like blocks or crayons. Group them into sets of ten. Have students count the groups: "1 ten is 10, 2 tens are 20, 3 tens are 30," and so on. Have them write the numbers in their notebook.

Interactive Exercises

  • Number Matching Game
    Create cards with numbers (10, 20, 30, etc.) and matching cards with the number of 'tens' (1 ten, 2 tens, 3 tens, etc.). Students match the cards.
  • Ten Frame Activity
    Use ten frames to visually represent the numbers. For example, for 30, fill three ten frames with counters.

Discussion Questions

  • What happens when we add another group of ten?
  • Can you think of things we can count by tens?

Skills Developed

  • Counting skills
  • Number recognition
  • Place value understanding

Multiple Choice Questions

Question 1:

What number comes after 20 when counting by tens?

Correct Answer: 30

Question 2:

How many tens are in the number 40?

Correct Answer: 4

Question 3:

What number is one ten?

Correct Answer: 10

Question 4:

If you have 7 groups of ten, what number do you have?

Correct Answer: 70

Question 5:

Which number has 9 tens?

Correct Answer: 90

Question 6:

What number is 5 tens?

Correct Answer: 50

Question 7:

Which number comes before 60 when counting by tens?

Correct Answer: 50

Question 8:

If you have 2 groups of ten, what number do you have?

Correct Answer: 20

Question 9:

What number is 8 groups of ten?

Correct Answer: 80

Question 10:

How many tens are in the number 30?

Correct Answer: 3

Fill in the Blank Questions

Question 1:

The number 60 has ____ tens.

Correct Answer: 6

Question 2:

4 tens is the same as the number ____.

Correct Answer: 40

Question 3:

When we count by tens, the number after 50 is ____.

Correct Answer: 60

Question 4:

The number 20 has ____ tens.

Correct Answer: 2

Question 5:

80 is the same as ____ tens.

Correct Answer: 8

Question 6:

When we count by tens, the number after 70 is ____.

Correct Answer: 80

Question 7:

The number 90 has ____ tens.

Correct Answer: 9

Question 8:

10 is the same as ____ ten.

Correct Answer: 1

Question 9:

The number before 30 when counting by tens is ____.

Correct Answer: 20

Question 10:

50 is the same as ____ tens.

Correct Answer: 5

Educational Standards

CCSS.Math.Content.1.NBT.A.1:Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral. CCSS.Math.Content.1.NBT.B.2.C:The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

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