Principles of Environmental Engineering and Science
Mackenzie L Davis,
Michigan State University - East Lansing Susan J Masten,
Michigan State University - East Lansing
Chem Skill Builder
This incredible online tool contains more than 1500 algorithmically generated questions, each with tutorial feedback. There is a direct correlation between student time investment in this program and increased problem-solving ability. A record of student work is maintained in an online gradebook so that homework can be done at home, in a dorm room, or in a university lab.