Well today in class we graded the homework of p. 301 #15-32 and p.310 #15-38 and we discussed about the project. Next Wednesday, the 10th, we will have the presentations to Elementary. You have to go to school that day, becasue it's worth 20% of the project and if you miss, there is no way to make it up. The grades of the projects will be individual, and everything must be in English. There will be three parts of the project for the kids. The history, which Ms. Saatkamp chose the history activity that Mayu, Carin, Pamella, Bernie, and Jenni made (the one in the shape of a tangram). The people that are going to present history to the kids are: Mayu, Lucas, Malena, and Carin. Then there is the story, that the group itself will choose from the three options. The people in the story are: Bernie, Gina, Jenni, Ricardo, Giovanni. And finally the last activity is making games where you will interact with the kids, The games must involve tangrams, and must be fun for 1st graders. The people here are: Javier, Alexandre, Florence, Franklin, Guilherme, Pamella.
The homework was a pain, because we returned to 8th grade subjects, an Ms. Saatkamp wasn’t too happy with our confused faces. In the first homework there is a lot of system of equations, which is when there are two variables in an equation, so when this happens, you have to isolate one of the variables in one of the equations, and then substitute the same letter. For example: if 4x=y+2 and 7x=2y, then you can isolate y in the first equation, which would be y=4x-2. So then you isolate the y in any of the equations, 4x=4x-2+2 (it’s a kindof easy example). The killer today was actually #26, because it went back to the quadratic formula:
#26)
y2 = 49 so y = 7 or -7
x2 = x+6
x2 – x – 6 =0
a x2 +bx+c=0 quadratic formula
a= 1
b= -1
c= -6
so x= (1 +/- square root of 1+24) divided by 2
so x= 3 or -2
The next homework was also very difficult, because the diagrams were hard to read, but most of them used the idea of isosceles triangles, because there are four isosceles triangles made from the diagonals in a rectangle. The idea of exterior angle also comes in useful when reading diagrams.
The homework was a pain, because we returned to 8th grade subjects, an Ms. Saatkamp wasn’t too happy with our confused faces. In the first homework there is a lot of system of equations, which is when there are two variables in an equation, so when this happens, you have to isolate one of the variables in one of the equations, and then substitute the same letter. For example: if 4x=y+2 and 7x=2y, then you can isolate y in the first equation, which would be y=4x-2. So then you isolate the y in any of the equations, 4x=4x-2+2 (it’s a kindof easy example). The killer today was actually #26, because it went back to the quadratic formula:
#26)
y2 = 49 so y = 7 or -7
x2 = x+6
x2 – x – 6 =0
a x2 +bx+c=0 quadratic formula
a= 1
b= -1
c= -6
so x= (1 +/- square root of 1+24) divided by 2
so x= 3 or -2
The next homework was also very difficult, because the diagrams were hard to read, but most of them used the idea of isosceles triangles, because there are four isosceles triangles made from the diagonals in a rectangle. The idea of exterior angle also comes in useful when reading diagrams.
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