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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.

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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

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Settings

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Diagram settings

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Circle count
select
default:"2 circles"
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

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Labels

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

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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.

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Display settings

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Show items
switch
default:"true"
When enabled, displays the items placed in each region.

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Color settings

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

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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)
  • Sort Question: For assessable sorting activities where learners place items into categories
  • Chart: For bar, pie, and line chart displays