The Magic of Making 8 Disappear

Contributor: Laquita Collins. Lesson ID: 14108

Dive into the enchanting world of numbers and learn to take away 8 from numbers under 20! With fun tricks, exciting games, and your very own magic wand (pencil), become a math magician in no time!

30To1Hour
categories

Elementary

subject
Math
learning style
Kinesthetic, Visual
personality style
Otter, Beaver
Grade Level
Primary (K-2)
Lesson Type
Quick Query

Lesson Plan - Get It!

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  • Are you ready to explore the Magic Number Kingdom?

Here’s a fun riddle to kick things off.

  • I’m a number that loves to hide.
  • Make me disappear, and see what’s inside!
  • The number left is a treasure to find.
  • Just like the legs on a spider, so be kind!

cartoon spider

  • Can you solve the riddle and guess the number?

Get ready to use your magic skills as you take away 8 and uncover the mystery!

Poof!

Begin your take-away adventure!

  • Did you know numbers can be magical?

You can use your magic powers to take away 8 from numbers less than 20.

With a sprinkle of place value magic, you’ll solve math puzzles like a true magician!

Understanding Tens and Ones

Imagine you have 12 yummy popsicles.

twelve popsicles

You want to share 8 popsicles with your friend. Here comes the magic!

Look at these blocks. They are just like the 12 popsicles you have.

twelve blocks

Now wave your magical wand and say, "Abracadabra!" to make 8 blocks disappear.

magic wand making 8 of the 12 blocks disappear

  • How many blocks are left?

Count the leftover blocks while you wave your magic wand!

four blocks

Ta-da! You have 4 blocks left because you took away 8 blocks from 12.

That means you have 4 yummy popsicles to enjoy!

Using tens and ones helps you see groups of ten and the little ones left over. It shows the magic behind the numbers!

Now, check out this cool video to see how fun it is to take away 8 from a number!

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That was so much fun!

  • Did you get them all right?

Of course, you did! You're a math whiz.

Learning to take away using tens and ones isn’t just fun. It is super helpful in things you do every day, like sharing popsicles, toys, or puzzle pieces with your friends.

It helps you see how many fun things you have left.

  • Are you ready to give it a try?

Look at the 18 blocks below. There is one ten base of blocks and 8 ones blocks.

Drag 8 blocks away from the 18 to leave 10 blocks.

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Great job! You did it.

  • Did you know you can use your magical drawing skills to take away, too?

Grab your magic wand and get creative!

The Rabbit Escape

Imagine you're at the petting zoo!

You see 10 rabbits hopping around.

10 hand-drawn rabbits

Oh no! 8 of the rabbits hopped away.

Pretend your pencil is a magic wand. Use your magic wand to find out how many are still on the field.

Draw the 10rabbits. (If that’s tricky, you can draw circles or squares instead.)

Now, cross out 8 of the rabbits to show they have hopped away.

10 hand-drawn rabbits with 8 crossed out

  • How many rabbits are left?

Count them while waving your magic wand!

2 hand-drawn rabbits

Whoosh! Poof!

Woo-hoo! There are 2 rabbits left.

  • Are you ready to try one on your own?

Pretend your pencil is a magic wand!

Use your magic pencil and drawing skills to solve the next problems.

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Fantastic Job! Now you know how to take away 8 from numbers under 20.

Now, poof over to the Got It? section to put your magic skills to the test.

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