Accuracy, Precision and Metrics

Accuracy Vs. Precision 

Today in class Mr. Lieberman began teaching us the difference between being accurate and being precise during labs. We started with a game involving three volunteers including Dana, Georgia, and Katie. They were asked to use a plastic gun and shoot rubber bullets on a bullseye. After doing this demonstration, we learned that being accurate (like Dana was) is dependent upon how close you get to your ultimate goal or the answer, in this case, the bullseye. We also learned that being precise is dependent upon how many times you produce the same action, in this case, how many times you hit the  board in the same place.

Metrics!

Mr Lieberman also taught us all about the metric system. He stressed how it was necessary to include units in all of our labs and the units we will use include meters, liters and grams. And the most common prefixes we will use include kilo, centi and milli. 

Kilo= 10^6

Centi= 10^-2

Milli= 10^-3

CAN THESE SITUATIONS BE REALISTIC?

       Can this pencil be 200 grams?                           Can this girl drink 25 milliliters of water?                 

Yes, this situation is realistic.

                                                                                     

No, this pencil is probably about 10 grams.

THE NEXT SCRIBE WILL BE BILLY K.