Extreme Math & Science – Wednesday: Lincoln & Peterson

Extreme Math & Science – Wednesday: Lincoln & Peterson

Today in Extreme Math and Science, students estimated unknown sample size by using the Lincoln Petersen method of population estimates using capture-mark-recapture methods. The students estimated populations and statistically compared them to figure out how accurate their estimations were.

Ask your student: What is the Lincoln-Peterson method? (It estimates of population size are based on a simple ratio and depend on the assumption that the population is closed to emigration, immigration, births or mortality during the sampling period)

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Engineering Explorations @ Aurora – Wednesday: A Series of Parallel Events

Engineering Explorations @ Aurora – Wednesday: A Series of Parallel Events

In this lesson, our engineers applied the knowledge they learned earlier in the week in a race to assemble two different types of circuits, parallel and series. Their creativity really lit up the room as they explored the difference between these two circuit types by powering LED lights in each of these styles.

Ask your student: What is the main difference between parallel and series circuits? (Only one path in a series circuit; parallel there are multiple paths) Which circuit style causes voltage drop? (series)

Fun Fact: Refrigerators, freezers, and water heaters use series circuits while electrical outlets in a room, house, or building use parallel circuits.

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Vital Signs @ Belle Valley & IMSA – Wednesday: A (Simulated) Urinalysis

Vital Signs @ Belle Valley & IMSA – Wednesday: A (Simulated) Urinalysis

Today, our junior medical practitioners were put to work in the lab! Our campers learned that many different diseases can be diagnosed based on the pH of urine.  Using (simulated) urine, they tested the pH levels of various samples and then handed out diagnoses based on the results. Our fledgling scientists will continue to use their rapidly developing medical skills in the days to come!

Ask your camper: What diseases are possible if a urine sample is a pH of 3.0?

Belle Valley Pictures: 

 

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IMSA Pictures: 

 

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CSImsa @ Belle Valley – Wednesday: Tie Dyes

CSImsa @ Belle Valley – Wednesday: Tie Dyes

The crime scene team began analyzing a promising new lead today by testing oil samples found on the driveway at the crime scene and comparing them with oil samples from suspects’ driveways. Students discovered the uses for the science of chromatography by watching how different colors separate, and using that information to match the crime scene oil with a likely culprit.

Our forensic scientists are developing a clearer picture of the case, and feel close to a breakthrough!

Ask your student:

What is chromatography used for? (separating materials)

What new information did you learn from your evidence analysis today?

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BioSleuths @ Belle Valley – Wednesday: Beak Design Challenge

BioSleuths @ Belle Valley – Wednesday: Beak Design Challenge

Have you ever thought about why birds’ have such different beaks? Your student can help you answer that question! One of the areas that they learned about today was different bird beaks and how they are designed. Using different tools or “beaks” students tried to “eat” a certain food item and move it to a bowl, or the “stomach” of the bird. Students had to figure out which beak worked best for each food item. Students then used logic and creativity to design their own beak that would allow them to eat a food of their choosing.

Ask your student:

What beak function might be best for eating seeds? (cracking).

What sort of food might a probing beak be well-suited for? (insects, worms, crustaceans).

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