Meet the Math Facts Multiplication & Division – 3 x 7 = 21

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In this lesson, students learn about multiplication using the example of three times seven, which equals twenty-one. The lesson explains that multiplication is a way to add the same number multiple times and introduces skip counting as an alternative method to find the product. Through engaging examples and practice opportunities, students are encouraged to enhance their multiplication skills, highlighting its practical applications in everyday life.
  1. What does it mean when we say “three times seven”? Can you explain it in your own words?
  2. How can skip counting help us find the answer to a multiplication problem?
  3. Why do you think practicing multiplication is important for everyday activities?

Meet the Math Facts: Multiplication & Division

Understanding 3 x 7 = 21

Let’s learn about multiplication with a fun example! Today, we’re going to explore what happens when you multiply three by seven. It’s like a magic trick with numbers!

What is Multiplication?

Multiplication is a way to add the same number many times. Instead of adding seven three times, we can multiply three by seven. This helps us find the answer quickly!

Three Times Seven

When we say “three times seven,” we mean we have three groups of seven. Imagine you have three baskets, and each basket has seven apples. How many apples do you have in total?

Let’s count together:

  • First basket: 7 apples
  • Second basket: 7 more apples
  • Third basket: 7 more apples

Now, let’s add them up: 7 + 7 + 7 = 21. So, three times seven equals twenty-one!

Skip Counting

Another way to find the answer is by skip counting. We can count by sevens:

  • Seven
  • Fourteen
  • Twenty-one

When we reach twenty-one, we know that three times seven is twenty-one!

Practice Makes Perfect

Try practicing with other numbers. What is four times five? Or six times two? The more you practice, the better you’ll get at multiplication!

Fun Fact

Did you know that multiplication is used in many things we do every day? From cooking to playing games, it’s a handy skill to have!

Keep practicing, and soon you’ll be a multiplication master!

  • Can you think of a time when you used multiplication in your daily life, like when sharing snacks or toys with friends? How did it help you?
  • Imagine you have a magic wand that can multiply things. What would you like to multiply, and why?
  • Have you ever noticed patterns when you skip count, like when counting by twos or fives? What patterns do you see, and how do they help you with multiplication?
  1. Apple Basket Game: Gather 21 small objects like buttons or coins to represent apples. Divide them into three groups of seven. Ask the children to count the objects in each group and then add them together to see if they get 21. This hands-on activity helps visualize multiplication as grouping and addition.

  2. Skip Counting Hopscotch: Draw a hopscotch grid outside or on a large piece of paper. Label the squares with numbers counting by sevens (7, 14, 21, etc.). Have the children hop on each square while saying the numbers out loud. This activity reinforces skip counting and helps them remember multiplication facts.

  3. Multiplication Detective: Ask the children to find examples of multiplication in their daily lives. For instance, if they see a carton with 3 rows of 4 eggs, they can calculate how many eggs there are in total. Encourage them to share their findings with the class, helping them see the practical use of multiplication.

Here’s a sanitized version of the transcript:

[Music]
Three times seven equals twenty-one.
Three times seven equals twenty-one.
Three times seven equals twenty-one.
Three times seven equals twenty-one.
Three times seven equals twenty-one.
Three times seven equals twenty-one.
One, two, three sevens equals twenty-one.
Three times seven equals twenty-one.
Seven, fourteen, twenty-one equals twenty-one.
Three times seven equals twenty-one.
[Music]

This version removes repetitive phrases and maintains clarity.

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