How were trading strategies used by the Mandan, Hidatsa and Arikara? Objective After completing this lesson,the students will: Identify and Apply trading strategies used by the Mandan, Hidatsa and Arikara. Compare and contrast two or more groups: Mandan, Hidatsa, and Arikara people and Mainstream America and identify that all people have different perspectives of history. Background This is a cooperative learning lesson filled with student engagement. Students will be given an opportunity for linguistic learning through journaling and discussion,visual learners will have plenty of props to loo Duration: 60 Minutes.