This video provides a detailed look at simple sentences, from two English professors. If you like their style of presenting the material, see their clip explaining other types of sentences.
Compound sentences: http://www.youtube.com/user/pattheprofessor#p/u/39/zM0hY53hlcU
Complex sentences: http://www.youtube.com/user/pattheprofessor#p/u/38/9A6CiemR8Rk
Source: YouTube
This amusing video offers a catchy (though sometimes off-key) way to learn the basics of compound and complex sentences. For the objectives of this packet, you definitely should watch the first half of the clip, though the second half discusses dependent and independent clauses, which is another important concept in grammar and writing. Understanding dependent and independent clauses is key to truly comprehending the differences between simple, compound, complex, and compound-complex sentences, so for a deeper understanding of the concepts be sure to view the full clip.
Source: YouTube
This is a quick, informative video detailing the differences between active and passive voice in sentences. Remember, active voice creates more vivid, engaging sentences in general.
Source: YouTube