- This book allows students to assume the role of a crime lab chemist to determine which black pen wrote a ransom note by using paper chromatography.
- By Jacqueline Barber
SIUE STEM Resource Center
http://www.siuestemcenter.org/
Southern Illinois University Edwardsvillehttp://www.siuestemcenter.org/
Science East, Room 1276
Edwardsville, IL, 62026
USA
618-650-3065