> ## Documentation Index
> Fetch the complete documentation index at: https://help.edzo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Venn Diagram Block

> Learn how to use Venn Diagram blocks to create 2-set and 3-set Venn diagrams for classification activities.

The **Venn Diagram** block creates a visual Venn diagram with 2 or 3 overlapping circles. Use it to show how items are classified, compare and contrast groups, and explore set relationships.

## When to use Venn Diagram blocks

Venn Diagram blocks work well for:

* Comparing and contrasting two or three groups
* Classifying items into overlapping categories
* Exploring set relationships (union, intersection)
* Sorting objects by shared and unique properties
* Teaching logical thinking and categorization skills

## Settings

### Diagram settings

<ParamField path="Circle count" default="2 circles" type="select">
  The number of circles in the Venn diagram:

  * **2 circles**: Standard two-set Venn diagram
  * **3 circles**: Three-set Venn diagram with additional overlap regions
</ParamField>

### Labels

Set a label for each circle (e.g., "Mammals", "Animals that swim"). Labels appear above or beside each circle.

### Items

Add items to each region of the diagram:

* **Left only**: Items that belong only to the left set
* **Right only**: Items that belong only to the right set
* **Overlap**: Items that belong to both sets
* **Outside**: Items that don't belong to either set

For 3-circle diagrams, additional regions are available for all possible overlaps.

### Display settings

<ParamField path="Show items" default="true" type="switch">
  When enabled, displays the items placed in each region.
</ParamField>

### Color settings

You can customize the colors of each circle, the overlap regions, the outside area, and the text.

## Tips for teachers and parents

**Best practices:**

* Start with 2-circle diagrams before introducing 3-circle versions
* Use clear, distinct categories that have meaningful overlap
* Keep the number of items manageable (3 to 5 per region works well)
* Use the "outside" region for items that don't fit either category
* Color-code circles to match your classroom color conventions
* Great for literacy (comparing characters, genres), science (classifying animals, materials), and math (number properties)

## Related blocks

* [Sort Question](/creating/resources/question-blocks/sort-question): For assessable sorting activities where learners place items into categories
* [Chart](/creating/resources/learning-blocks/chart): For bar, pie, and line chart displays