I just found out about this from my friend Debra; and it is so cool! A Grammar expert e-mails Daily Grammar lessons to your inbox. I am using it for review myself, as my grammar has been failing. I can see using it with older elementary children, junior high ages as their main grammar lesson. Have them read the e-mail; or read it together and then work on writing or diagramming some sentences to review the concepts. Some of the vocabulary is too advanced for my 8 year old. However, my children love to send and receive e-mail; so I can see this working really well.
The bottom line is; We try not to insist on parent-led learning or gravitate toward child-led learning. We try instead to focus on God-led learning and ask for His input and perspective on every aspect of our home school. That way, when others fuss about what Dan and I are doing and make me second guess our decisions -- I can go back to our decision process and find God's fingerprints, reminding me that this is His way.