Thirty pages of grammar activities? Your young grammarians will be well versed in the parts of speech, basic verb tenses, and much more after completing even a handful of these exercises. 

Why write five paragraphs when you can say what you want to say in two? Learn how to make the most of your words and sentences to get your point across without being too wordy.

This site from Tex's French Grammar provides a clear and concise presentation of the l'imparfait. Shows stem and endings, provides written and audio examples and interactive practice exercises. Has links to various usages, such as states...