Venn Diagrams

**Venn diagrams **are a fun and fast way to compare groups of things.Β

Let's look at this **set** of shapes:

It's a mess!Β

π€ How can we arrange the shapes so it's easy to see which are blue and which are square?

πΊ You're right! We can make a Venn diagram!

A **Venn diagram **uses circles to put things into groups.Β

To make a Venn diagram, draw 2 circles. One circle is for **blue shapes**, and one is for **square shapes**.Β

If a shape is **blue**, where will it go?Β

That's right! In the **left **(π) circle labeled "Blue Shapes".

If a shape is square, where do put it?

You got it! It goes in the right (π) circle labeled "Squares".

If a shape is both blue **AND **square, where will it go?

π€ It goes in the **middle **where the two circles **overlap!**

What if you have a red circle? Where should it go? π€

π Some things don't belong in any circle. So they go outside. π

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

Congratulations! You just made your first **Venn diagram**!

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

1. How manysquaresare therein total?

π Count the objects inside the circle for Squares.Β

Yes! There are 11 squares!

2. How manysquaresarenot blue?

π Count the objects in the "Squares" circle, but do not include the squares that are in the "Blue Shapes" circle.

There are 7 squares that are not blue π.

Look at this blank **Venn **diagram.

π€ What part is for shapes that are blue **and **square?

π It's the middle part!

**AND**** ** is for the shapes that go into the part where the **two circles overlap.**

The shapes that go in this overlapping part meets the description for both groups.

Now if someone asks you:

Which shapes are squaresand notblue?

π€ What part do you highlight?

π 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:Β

What shapes are blueorsquare?

π€ What parts would you highlight?

Yes! All of the parts! π

**OR **means you include all the things from **both **groups!

Great job. Now use what you learned by starting the practice below.

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