Introduce your budding forensic scientists to the many types of impressions taken at a crime scene and how they can lead to solving a crime.
Investigators at a crime scene must be extremely careful not to destroy any trace evidence that may lead to a suspect, and in this activity, students will learn how to observe, classify, and analyze impression evidence.
They will look at footprints, fingerprints, writing, rope and binding, and key impressions as well as tire tracks. They will also be able to make casts of the various impressions to help solve the included crime scenario.
This activity is suitable for students in grades 8-12 and has enough materials for 24 students working in groups of 6 or 4.
Vials of carbon powder
Small paint brushes
Plain paper stock
Plaster of Paris
5 different ropes
Tire Impressions Pictures
Small ink roller
Materials needed but not included:
Mixing containers (approx 3 quarts)
Old gym shoe