Venn Diagrams

Look at this **set** of shapes:

It's a mess.

๐ค We want to see how many of the shapes are squares, and how many are blue.

๐บA Venn diagram is just the tool we need!

A **Venn diagram **uses overlapping circles to show how things are alike or different.

To make a Venn diagram, draw 2 circles. One circle is for **blue shapes,** and one is for **square shapes.** Make some part of one circle **overlap **with the some part of the other circle.

- If a shape is **blue,** it goes into the circle on the left labeled "Blue Shapes". ๐

- If a shape is **square**, it goes into the circle on the right labeled "Squares". ๐

- If a shape is **blue AND square**, where do you think it goes?

๐ค It goes in the **middle **where the two circles **overlap!**

Now let's move the shapes into the circles where they belong.

Congratulations, you made your first **Venn diagram!**

Now let's see if we can answer some questions about the shapes.

1. How many **blue things **are there?

๐ Count all the blue things.

There are 10!

2. How many **squares **are there?ย

๐ Count all the square things.

There are 11!

Look at this blank **Venn diagram**.

๐ค What part is for shapes that are blue **and **square?

๐ It's the middle part!

**AND**** ** means it's where the **two circles overlap.**

Now if someone asks you:

Which shapes are squaresand notblue?

๐คWhat part do you highlight?

๐ Yes, it's like we subtracted one circle from the other!

Great job.

Now let's learn another way to group things with **OR.**

If someone asks you:ย

What shapes are blueorsquare?

๐คWhat parts would you highlight?

Yes! all of the parts! ๐

**Or **means you include things from **both **groups!

Great job. Now use what you learned. Start the practice below.

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