"Together with the Bible, the Book of Mormon is an indispensable witness of the doctrines of Christ and His divinity. Together with the Bible, it 'teaches all men that they should do good' (2 Nephi 33:10). And together with the Bible, it brings us to 'one Lord, one faith, one baptism.' That is why the Book of Mormon is so crucial in our lives." (Tad. R. Callister)
Here are some posts that might help you teach your children more about this sacred book.
The Book of Mormon ABCs: The Power of Memorizing Book of Mormon Teachings
Five Best Book of Mormon Verses: a sampling of teachings
A Book of Mormon Party: One way to celebrate when you finish reading it!
Make an Easy Cover for your Book of Mormon: a tutorial
Read The Book of Mormon in 30 Days: bookmark reading schedule download
Don't Die Like Shiz: a moral
Armed with the Spirit: a thought for leaders
We Knew of Him: all of the Holy Prophets knew of Christ