Sorting 2D shapes
The screen shows a Carroll Diagram with matrix labelled 'red', 'not red', 'rectangles' and 'not rectangles'. There are 12 shapes to sort using two criteria - shape and colour.
Drag each shape onto the Carroll diagram into the section which matches its characteristics. A shape which is placed in the correct place will stay there. If a shape is placed in the wrong place it will jump back to its original position.
Click on "start again" to move all the shapes back to their original positions.
Run Carroll diagram