The Click On 1 - 4 DVDs combine informational references, in the style of TV documentaries, with 2-D or 3-D animated story segments. The language program is based on the corresponding teaching units. The DVDs can be used for practice at home or in the classroom, as part of every lesson or as a supplement to any course at the same level. The Click On 1 - 4 DVDs come with Activity Books for use with the DVDs.