I looked for some more information through some other sources. I used the public library catalog to search for books on how to play chess. I used "chess-juvenille literature" as my search criteria. The search returned 19 hits in which all of them seemed like valid resources. I really preferred the book with the large picture illustrations though, they really help children to understand the rules being taught.

I thought it might also be helpful to have a video explaining chess so I searched YouTube. I found that there are a lot of clips out there. I had to weed through the results to find credible clips but I was able to get a few really informative, simple clips I think may help one understand the game. I have included one of the better clips below.