Exclusion tasks are important for students who need to develop abstract thinking and problem solving skills. These seven worksheets require students to find the object that does not belong in an array of four items. Elicit from youngsters the reason why the item doesn't belong and what category the other three belong in. The categories include a variety of topics and are more advanced. Examples of the categories addressed are items you wear at the beach and things you take on a picnic. This resource is perfect for children who need to expand their vocabulary beyond basic classification. Use this product in speech sessions or as homework. It is also great for ESL students. Happy Teaching!