These are the worksheets that I use as a launch-point for self-directed learning in my classroom. The students use these worksheets as an introduction to a unit and then, if they've enjoyed them, continue doing independent research into the topic. The worksheets include videos, reading comprehension, wordsearches, puzzles, and occasionally crafts. The first page is an introduction to the unit, then three levels of activities which get progressively more difficult but also more entertaining. This