Germs, video games, and bacteria just a few of attractions at South Tahoe High Schools Science Expo

SOUTH LAKE TAHOE, Calif. - Does playing video games make you smarter? Does the five-second rule protect you? Are all hand sanitizers the same? Do "fast relief" medications work faster?

These were all themes of South Tahoe High School (STHS) students during the science department's first Science Expo last week.

Science Department chair Kyle Tomes said students from the mandatory science classes (biology, chemistry, STEM) participated.

"Kids always ask, 'Why does this matter?' so the kids used science to explore the answer," said Tomes.

Reg Grijalva wanted to find out if paying extra for fast relief medication was worth it. He mimicked stomach acid to test the movement of the medication in the stomach at body temperature.

The answer? The fast relief medications are about ten seconds faster, so Reg said "No."

Comet Loughrin decided to see if hand sanitizers were all the same. She used three different brands, one from a higher price point - Purell, one from the Dollar Store, and the last one was the CVS brand. She attempted to grow bacteria with the hand sanitizers present. Comet says the best brand was CVS, the other two results weren't clear. She said all three together provided the best protection.

The question many parents are asking is, what are the effects of time spent playing video games? Brian Partida hypothesized that "playing video games for three hours a day makes you smarter."

Brian's display at the Science Expo was a big hit with a large-screen television with games and seating for players. He said mind skills are developed by playing, hand-eye coordination is improved, problem-solving skills are enhanced, and the player's need to react quickly to identify and process information is beneficial. Brian did identify negative impacts as well. Excessive gaming can lead to a sedentary lifestyle and adverse health consequences, not enough social interaction, and an impact on academic performance.

"Achieving a balance and playing video games in moderation is important," Brian concluded. He said three hours a day is the most anyone should play, and it's important to prioritize the other aspects of life "such as physical activity, social interactions, and academic pursuits, to maintain a well-rounded lifestyle."

Then there is the five-second rule. You know many of us have used that excuse when dropping food on the group. But is it safe? According to the students, "no" after they tested four different foods for bacteria.

Tomes said they are now planning on having an annual Science Expo.