NOTE: Answers to Try It and Practice Problems are provided at the end of each lesson, so an answer key for teachers or mentors is not required; however, students should show their work in order to verify that they are doing the activities correctly.
This lesson has activities in the Practice Problems section that require independent research at a school or local library, or on the Internet.
This lesson has activities in the Practice Problems section that require independent research at a school or local library, or on the Internet. 