Introduce or review a unit on the history of pioneer life on the Oregon Trail with this informative and easy-to-implement vocabulary puzzle worksheet. Puzzles make fun no prep activities for early finishers, bell ringers, morning work, handouts, homework, lesson plan supplements, sponge activities, introductions to new topics, classroom themes, and sub files.The 27 hidden vocabulary words are: Accidents, Belongings, Buffalo Chips, Cholera, Dangerous, Emigrant, Idaho, Kansas, Missouri, Native Am