The topic of the class today was fingerprinting. Dylan began with going over what ridges were and how fingers had oil and sweat glands that leave marks even if we can't see the print. Then, Dylan asked the students how fingerprints might be important in forensics. The categories of fingerprints were written and explained by Dylan. Then Dylan asked the students questions about how many years has fingerprinting been used and how many years fingerprints have been used for crime. The students guessed decades, since human life began, etc. for how many years fingerprinting existed. Dylan explained fingerprints were used for thousands of years for signatures and 114 years for crime. The other three categories of fingerprints, loop, whirl, and arch were shown by Dylan. The students stamped their fingerprint onto a piece of paper and the paper was scanned. The GIMP program was used to analyze their fingerprints. The other intern, Aneesha, quizzed the students. The students determined which category their fingerprint was in and compared other fingerprints to theirs. Dylan and Aneesha helped the students with the program. Then the students proceeded to compare fingerprints in pairs, ultimately narrowing down the suspect of the stolen cookies. Dylan took a count of the suspects. After the break, Dylan revealed the fingerprint was Travis. The students wrote the new piece of evidence on their notepad. Dylan showed the students how to exonerate suspects from the shape of the suspects fingerprint and the criminals. The next topic discussed was how Dylan received the fingerprint from Travis. Everyone went to the break room, and the students cleaned the block and pressed their finger on blocks, so their fingerprint showed up. Then, they dipped their brush into black powder (used in forensics for fingerprinting), and swiped it across the block. They dumped off the excess black powder, but the black powder stuck to the fingerprint part. Tape was put over the fingerprint part and pulled off, so the students could see the fingerprint on the tape. The process was done with the help of Dylan and Aneesha. The students finished up the day with reflections.