Micro STEM @ Aurora – Friday: Homemade Batteries

Micro STEM @ Aurora – Friday: Homemade Batteries

On our final day of Micro STEM, the campers made their own batteries! First campers made a hand battery. The hand battery works with a piece of aluminum and a copper sheet, which are conductors. They used their own body’s electric charge by placing a hand on each of the plates, then measured the electrical output with a multi-meter.

Ask your student:

What materials did you use for the aluminum air battery? Aluminum foil, paper towel, salt water, and activated charcoal.

 

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BioSleuths @ Aurora  – Friday: Forensic Entomology

BioSleuths @ Aurora  – Friday: Forensic Entomology

Today, students continued their study of forensic entomology: the use of knowledge of insects to help solve criminal investigations. Our junior investigators learned how forensic entomologists use the life cycle of maggot-laying flies in order to determine the exact time of death of a victim. In order to observe the life cycle in action, students examined their canned chicken samples from Monday.

In addition, the biosleuths used the knowledge they had gained about forensic entomology to solve crime scene situations!

Ask your student:

What exactly are maggots? (fly larva)

How can forensic scientists use maggots to estimate time of death? (life stages of a fly take a known amount of time)