The English writer, Samuel Johnson once declared: 'Knowledge is of two kinds. We know a subject ourselves, or we know where to find information on it.'
This resource for teachers contains forty challenges which invite students to name things within a given category. An example is to collect the names of towns or cities with a river running through them. Students first tackle this challenge without access to reference material — in short, they display Johnson's first kind of knowledge. Later, students are allowed library and on-line access and so demonstrate the second kind of knowledge.
In this way, students work cooperatively, expand their knowledge and vocabulary while gaining reading and research skills.