Rube Goldberg Challenge

In this session of design, we found out our next big unit for this term, Rube Goldberg machines. A Rube Goldberg machine is a complex contraption built do simple tasks for you. We had 2 hours to build a fully functioning machine that put paper in a bin. This also had to include 3 simple machines such as a pulley, a wedge, a screw, an inclined plane, or a wheel and axle.

We were put into groups of three, and set off to start brainstorming and designing our plans. We started off by looking at some of the objects in the classroom that we could incorporate into our machine. Some of the objects include: a pencil, a world globe, dominos, reading books, and ping pong balls.

My group spent quite a lot of time discussing what we were going to start off with. So to help us, we took the first two items we could see and thought of a way that we could put them together. The two objects were: the world globe and a pencil. After some time of discussing, we finally decided. We stood the pencil up against the globe, and to start the machine, we would just spin the globe. Then, we would need something to activate after the globe spin. So, we reached out to the dominos. We were only allowed to use 2-3 dominos because they took a long time to set up. What we had so far was: We spun the globe, (which had a pencil leaning on it) which caused the pencil to fall, knocking the three dominos over.

We added a ping pong ball so that when the dominos fell over, the ping pong ball will roll. We put books so that the ball would go in the right direction.

Suddenly, we were all called to the floor no matter what we have accomplished. We were told that we were going to all share what we have built. One person would have to stay and show while the others went around and looked at the other Rube Goldberg machines. Then, we would just rotate.

I think that I have learnt, even though it might be hard, you can always find another way. I really enjoyed this session of design because it has taught me how to experiment with new things. I really liked this unit and are glad to be continuing on with it.


Angles Investigation

In todays math lesson we discovered a variety of new angles using two programs, Random Angles and Angles On A Line.

Angles On A Line

In this program we had to grab a partner to play against, and one laptop. You could either be red or blue. On the line, there was a semicircle, one half red, one half blue. A vertical line in the middle of the semicircle separated the different colours. The line was also used to move side to side to create different angles. Each player took turns to move the line, and guess what the degree was. The answers were covered up with a white board, and to revile them you would just click on the board. Here are some photos of our work.

Random Angles

This program was a bit more challenging because we didn’t get to choose the degrees of the angles. At¬†the bottom of the screen, there were seven different buttons. Each button determines what unmount of degree you would get.¬†On the¬†buttons there were numbers: 0-90¬†¬† 90-180¬†¬† 180-270¬†¬† 270-360¬†¬† 0-180¬†¬† 0-270¬†¬†¬†0-360.

Depending on which button you press, depends on what angle you get. Again, we had to try and work out what the degree was, and to check the answer we clicked on the white board, which had the answer hidden behind it. Instead of checking the answer that way, we were also able to access a protractor, witch also helped us get to the answer.

Here are some pictures of some of the rounds.

I really enjoyed expanding my knowledge of angles and degrees, and I hope we will continue on this unit.