Venn diagrams at KS1
Venn diagrams are great for encouraging discussion about the properties of numbers, shapes and objects. They are also a useful tool to help children learn how to sort items by their characteristics.
When first introducing Venn diagrams to children, ask children to sort shapes or objects into hula hoops or sorting hoops. To start with, just use one hula hoop and give it a rule or property e.g. red items. Ask children to put all of the red items from their set into the circle.
Next, you can introduce two hoops, side-by-side, each with their own rule. Again, ask children to sort all the items that meet these rules into the correct circle. Children may point out that some items can be placed in both hoops. At this stage, you can ask children for their suggestions about how to solve the problem and introduce the concept of overlapping circles.
Make sure to explicity teach how to use the intersection of the venn diagram as well as how to record non-examples by positioning these items outside of the diagram.