- Counting to Infinity - Introduction to infinity including the origins of the sign for infinity and pictures.
- Hotel Infinity - Includes articles on big ideas and concepts, an introduction on background ideas, activities, books to read and a page of resources as well as a vocabulary index.
- Infinity - Article about infinity. Talks about potential infinity and actual infinity.
- Mathnet : Does "Infinity" Exist? - Looks at the 3 different contexts and says for each whether infinity exists in each one and why. Links to other essay on the same site on infinity.
