Tuesday, December 7th's Class
Hey everyone! In class on Tuesday, we started out by checking our previous homework, which was to graph the data for the Ping Pong, Tennis, and Soccer ball Lab! This consisted in drawing either one or three graphs with the data of the lab. After having Ms.D check our homework, we discussed on how to draw a curve line on our graph. These lines helped us to find out the outliers (outliers: points on a graph that have nothing to do with the other ones, and are proved wrong) . Here is a possible example of an outlier:
This graph is showing how fast some boys were running for 3200 meters. As you can see, there is a red line in the middle, which shows the average speed and the average time. All of the dots that are far from the line, are examples of outliers! Notice that some are on top of the line and some are under, showing how some boys took more time to travel the distance than others.
This is a picture of a dotted graph which is similar to the ones that we were working on in class. Even though this graph has the dots connected, we haven't connected them yet.
During the continuation of the class, Ms.D gave us our quizzes back, which we saw, but couldn't keep, since Tamara, Vale and Chiara haven't done them yet. Once we saw our grade, Ms.D gave us the rest of the class to finish the lab.
Here are the questions we worked on:
1) What was your speed for the ping pong ball? tennis ball? soccer ball?
2) What was the speed of the person behind you (down the hill) for the ping pong ball? tennis ball? soccer ball?
3) What was the speed of the person in front of you (up the hill) for the ping pong ball? tennis ball? soccer ball?
4) What is happening on your graph? Please use scientific vocabulary to explain this in a paragraph (5 sentences min)
5) If the hill went down and then back up and we rolled a soccer ball along the entire thing, what you expect the graph to look like and why?
6) What are some of the possible errors in this lab? (4 minimum)
6) In one sentence, explain the main concept of acceleration.
7) In one sentence, explain the difference between acceleration and deceleration.
Here is the link to moodle if you want to print the sheet out:http://zagreb.ceesa.net/course/view.php?id=188
Here is an interesting website that explains what time is: http://www.historyforkids.org/scienceforkids/physics/time/
Here is a video talking about best fit lines and scatter plots...can you identify some outliers in the graphs this man is drawing?? http://www.youtube.com/watch?v=i1uKiZpkl9A&feature=related
Our only homework for Thursday is to finish the lab. REMEMBER to do your fourth blog comment for Friday, and 7th graders,keep in mind that by the end of the quarter, you will need to have made four comments to our class, and three comments to the 8th grade blog!!
The next Scribe is......drum roll......Tamara!!!!