Maths Portfolio Sample

Description: In class we have been tested on a series of math questions. Each Stage Group in maths had different questions. For example: Stage 5 had to use one number, while stage 6 had to use two. For stage 6 maths, we were tested on questions like: "Write two numbers that have a sum of exactly 30." These questions were laid out as Rebel Sport prices.

Questions:

Big Idea: The strategies that I'm learning at the moment is: R/C, E/A and P/V. If you don't know what these strategies do or what they mean, here is my explanation. R/C stands for "Rounding And Compensating" We basically round a number from our equation, then add how many numbers we rounded in the first place. If that makes no sense, here is an example: 63-39=?    63 - 40 +1 =24.

E/A stands for Equal Additions. This is the same as R/C but except from add after the equation, we add before the equation. For example: 63-39=?      64-40=24. And P/V stands for Place Value. 

You are probably wondering what answers I got. Well, here are my answers as well as what strategies I used.

1) (P/V) 

345 + 379 = 724

300 + 300 = 600

40 + 70 = 110

5+9 = 14

600+110+14=724

2) (Trial & Error + Equal Addition)

(It took ALOT of trial and error, so here are only a few of the equations that I worked with.)

                    155-119 = 156 - 120

+1   +1 

=36

____________

                      215 - 119 = 216- 120

+1  +1

=96

___________

                  215 - 115 = 220 - 160

+5   +5

=60!!

3) (Trial & Error +Algorithms, with help from Bella)

379

+119 

____

=489

________________

379

+45

____

=424

________________

289

+155

____

544

________________

289

+137

______

=426!!

4) (Algorithms)

        289

       155

         ____

        134

FeedBack/Feedforward: 

WOW Aye, you are defiantly showing a lot of stratagies and  what you have been very good at. You could work on showing 

the Reversibility strategy. I really think you have shown us what you know and what to work on. You have done a lot of work on this as I have seen you in class. Amy

Evaluation: Thanks Amy. I really think I have learned a lot of strategies that I have never have known before. I think I might need to use more strategies that may be a good match for the equation. Other than that, I think I have gotten a better understanding of different strategies. I hopefully can use these strategies in High School or College or my job!