Brine Shrimp Investigation 1

Check out the brine shrimp in the video below.

What are your predictions for the last question?

Fama: "If you put 2-4 scoops of salt in the cup with zero scoops, the brine shrimp will hatch. If you put water in the cup with 6 scoops some might hatch."

Riley: "The cup with zero scoops, if you put 2 scoops of salt, it would be just as good as the other cup with 2 scoops. More would be hatching."

Khanetria: "The cups with 6 scoops, if you put more water in it, some of the salt will evaporate and more brine shrimp will hatch."

Estefanie: "If you make the changes in the video, the brine shrimp will hatch."

Gas Prices

What does this picture have to do with Unit 1?

What question(s) come to mind when looking at the 4 prices?

The Optimum Level of Cooperation

Check out this video.

What questions come to mind?

Jesse: "How did they do that?"

David: "When did they rehearse?"

Elizabeth: "How did they not get confused?"

Haylee: "How long did it take them to do it?"

Kamren: "What year did this take place?"

Ilisabeth: "How did they make patterns?"

Harmandeep: "Who first came up with the idea?"

Riley: "How did they pass each other without crashing?"

Fama: "How did they do that with confidence?"

What would happen if 1 motorcyclist turned the opposite direction of the flow?

Letter from Dr. Flint Jackson

9/25/10

Dear Mr. Magill,

As I told you in our conversation on the telephone, I've been studying the bird populations around Mono Lake. This is a lake in Northern California. The lake has been drying up and getting smaller. As a result, Mono Lake has become a salt lake. As the level of the lake falls, the concentration of salt, or salinity has increased. This environmental change might be affecting the organisms in the area. For instance, the lake has small organisms called brine shrimp. The birds that migrate to the lake depend on them. If the lake continues to get saltier, either because the lake is drying up or fresh water flowing into the lake is being reduced, the salty aquatic environment might have an effect on the shrimp.



I would be most grateful if your class chose to help me out on a research study. I'm trying to figure out if the salinity is an environmental factor that's affecting the hatching of Mono Lake brine shrimp eggs. If so, I've sent you some brine shrimp eggs from Mono Lake to use for research.

Would your class be able to help to design an experiment that would contribute to my studies?

Sincerely,

Dr. Flint Jackson

Place Value

Today we each tried to come up with a way to describe place value. I used the metaphor of stadium seats (Note: Mr. Rodger's idea.). Many of you know your position in a stadium determines the value of your seat. If you could choose 2 seats at Safeco Field for a game, based on the picture below, what would you choose? Now think about that and pick 2 seats with a higher value. Last, pick 2 seats that would have a value less than the starting tickets. How does the position affect the value?

Now let's think about that in terms of a number. Which number below has the greatest value? Which has the smallest? How does the position of the digit affect the value of the number? Now, describe place value to another person.

222,222