Homework for 27 Oct (Thu)

To complete Q 62 - Q 66 of Math WS .

No need to do Question 63 (b) due to question error.

For SA 2 do revise your Heuristic skills ( Worksheets) especially those taught in Semester 2

 

Stretch Worksheet on Area & Perimeter

Hi 4A,

This post is for Question 1 of our Area & Perimeter Stretch Worksheet.

Method 1 solution :

To visualise by removing  the concrete path and rejoining the remaining park.

Hence the length became : 30m - 3m = 27m

Area  covered by grass =  Length x Breadth
                                      =   30 m x 27 m
                                        = 540 square metres 

Some of you came up with the alternative solution of finding the area of the concrete path.

Method 2 solution: 

 Area of concrete path = 3 x 20 = 60 square metres
Area of Park = 30 x 20 = 600 square metres
Area covered by grass = 600 - 60 = 540 square metres

For this solution , we need to find the area of 2 parallelograms first ( which is also Length x breadth)

Watch this video to help you visualise.

3/10 Math Homework

To complete Math SA 2 Practice Paper 2 . Do show your workings clearly in all sections.


I have returned you the following today for your filing :

1) WB Chapter 13 Area & Perimeter
2) WB Revision 2
3) Chapt 13 - EDP WS 3

30/9 Math Homework

To complete Math WB Chap 14 (Tables & Line Graphs) Pg 151 - 156

I have returned the following today for your parent's signature:

1) EDP WS : Chapter 15 Time WS 2
2) EDP WS : Chapter 13 Area & Perimeter WS 1 and WS 2

For finding perimeter of a composite figure, do use the highlighting method for finding sides of same length .

This helps you to add up less sets of numbers and hence reduce the possibility of calculation errors.

 Adding up all the sides of a composite figure to find perimeter.

 

Adding up all the 8 sides separately  may cause calculation errors . 

 Examples of highlighting method: 

Using highlighting method , we only need to add 4 sets of numbers to find teh perimeter compared to 8 sets of numbers. 

Using highlighting method, we added up 4 sets of numbers to find the perimeter compared to adding 8 sets of numbers . 

Another example: We added up 6 sets of numbers ( 2 greens sides, 2 yellow sides and 2 purple sides ) instead of adding up 8 sides.  
    

29/9 Math Homework

Please complete Math Review 6 for those who are unable to finish it in class today.
This is due tomorrow .

27 Sep Math HW

To complete Math WB Revision 2 corrections.
I will go through selection questions tomorrow in class.