To know about the history of John Wesley Powell.
28 slides with 15 quiz questions and a link to an amazing 30 minute video where an actor tells the story of the 1869 expedition.
The quiz is played in pairs - 1 partner describes the word in red without saying it, whilst the partner has their back to the board. Alternatively remove the 'red' word and use as a whole class activity.
This has brilliant pictures/drawings and a web link to an excellent 30 min documentary.