The Click On 1 - 4 DVDs combine real references in the form of television documentaries with 2-D or 3-D animated stories. The language program is based on the corresponding course books. The DVDs can be used for practice at home or in the classroom, as part of any lesson, or as a supplement to any course at the same level. The Click On 1 - 4 DVDs come with Activity Books that are used alongside the DVDs.