### Consultation on 31 March 2012

Dear S1-04

I'll be back in school tomorrow (31 March, Saturday), from 10am to 12noon.
If you need face-to-face consultation for the preparation of the Level Test, you may send me a message at Facebook to inform me that you are coming to school.

When arrived, call "427" using the telephone outside the staff room.

Ms Loh

1. Formative Assessment: Real Numbers
Hardcopy - 20 minutes
No calculator is allowed

2. Formative Assessment: Approximation & Estimation
Via Ace Learning Portal - 15 minutes
No calculator is allowed

Remember to submit (i) Homework 2b (ii) Homework 3a

### Formative Assessment & Level Test

Dear Students

As communicated during the lesson this week:

(I) Formative Assessment
The purpose is for you to assess your readiness and identify gaps in learning
• Chapter 2: Real numbers
• No calculator is allowed
• 30 March 2012 (Friday)
(II) Level Test 2:
• Level Test 2: next Tuesday
• Topics tested: (1) Chap 1 Factors and Multiples (2) Chap 2 Real Numbers (3) Chap 3 Approximation & Estimation (4) Chap 16 Data Handling
• Note: Chap 16 Data Handling - AceLearning #1 Introduction to #6 Frequency tables

### eLearning Lesson 1 Activity 1 Task 2 PONDER @ Maths Blog

The ESSENTIAL UNDERSTANDING for this activity is different graphical representations serve different purposes. From the 'characteristics' of the graphs, we should be able to identify the kind of information we can draw out from each type of graphs.

In this task, you are to ponder...

Among the 4 graphs (Line Graph, Bar Graphs, Pictograms, Pie Charts), one of the graphs that is NOT appropriate to represent the information?

- Can you identify the one that is not appropriate?
- Why do you think it's not appropriate?
- What makes you think the 3 remaining graphs are appropriate?

With reference to the feedback provided in your postings, are you able to answer to the above questions?

The following have not attempted this activity. Please post your response in a separate post (as required in the eLearning lesson instructions):
[1] ACHUTHA D/O KARUPPIAH
[10] CHIAM CHUEN
[15] LIAW XIAO TAO
[16] LIM ZHONGZHI

### eLearning Lesson 1 Task 1: Choice of Graphs

I chose this graph for the variables on the x-axis are all different, thus the increase and drop in the line is not a drop in the number of one variable, but instead, it shows the difference between all the variables.

Chiam Chuen S1-04 (10)

Sorry Ms Loh, for submitting this late as I could not find this task previously.

### eLearning Lesson 1 Task 1: Choice of Graphs

I feel that the line graph is inappropriate as it shows the trend over a period of time but not the number of places which are sunny, windy, cloudy, etc.
The other graphs are appropriate as they show the number of places which are sunny, windy, cloudy, etc.

### eLearning Lesson 1 Activity 2 Representation of Data using Statistical Diagrams

In the TWO tasks, you were to analyse data presented and use spreadsheet (e.g. Numbers, GoogleSpreadsheet, MS Excel) to compute data and generate charts.

The files are provided in 3 formats (PDF, MS EXCEL and GoogleSpreadsheet).
You may choose to use any type where appropriate and present your answers in a shared GoogleDocument.

Here are resources to those who need help to plot the charts:
- iWork - Numbers
- Numbers '09: Creating a chart from table data
- Youtube clip 1: Numbers '09 - Create and Edit Charts
- Youtube clip 2: Creating Charts in iWork 09 Numbers (MacMost Now 460)

Those who have not handed in, the deadline has been extended to Thursday (29 March 2012).
You may check the status of submission at GoogleSite > Mathematics > Class Page

### Performance Task (eLearning Lesson 2) Group 2 (Compass Point)

The situation at the taxi stand was quite good, but at times, there were many taxis but no people at the stand.

 This was done by Anbarasan Subramaniyan, Angeline Yap, Chun Leong ,  A Manika Praveen

### eLearning Lesson 1 Task 1: Choice of Graphs

I believe that the line graph is inappropriate as it is usually used to represent changes over time.

### E leaning points to ponder

The pie graph is not accurate as it does not show the exact values plus some numbers are rounded off therefore it is inaccurate.

### eLearning Lesson 1 Task 1: Choice of Graphs

I think the pie charts is inappropriate because by showing that the sunny weather is 360 degrees. It only show that there is no other weathers. It does not show how many sunny weathers are there.
I think the pie chart is not suitable to present the weather conditions as the pie chart does not give the exact number of countries and the numbers are rounded off to the nearest whole number which makes the readings somewhat inaccurate.

### eLearning Lesson 1 Task 1: Choice of Graphs

I think the pie chart for weather is inappropriate as there cannot be 2 weathers in 1 day

### eLearning Lesson 1 Task 1: Choice of Graphs

I find it inappropriate as we are able to count the number of locations affected by the type of weather. We thus do need to round it off to the nearest whole number.

### eLearning Lesson 1 Task 1: Choice of Graphs

I choose the line graph as it is only used to show changes over a period of time.

### eLearning Lesson 1 Task 1: Choice of Graphs

The pie chart is not appropriate to use for the weather as it doesn't tell the exact number of countries that are having a certain weather but it rounds off the number.

### eLearning Lesson 1 Task 1 : Choice of Graphs

I think this pie chart is inappropriate as the numbers are rounded to the nearest whole number and i think the best one would be to use the pictogram.

### eLearning Lesson 1 Task 1: Choice of Graphs

I think this is not appropriate as the weather is a condition and not a number and it is rounded off which does not give an exact answer

### eLearning Lesson 1 Task 1:choice of graphs

I think that the line graph is inappropriate as it does not do a comparison between the different weathers.

### eLearning Lesson 1 Task 1: Choice of Graphs

I think that the line graph is inappropriate in this situation as a line graphs are used to represent one factor over a certain period of time . However this graph is used to represent different factors.

### eLearning Lesson 1 Task 1: Choice of Graphs

I feel that line graphs are not appropriate for showing weather in different countries due to the fact that line graphs are meant to show changes over time. This graph ends up not using the line which is the most important part of this type of graph. I feel that a pie chart would be much more effective though

### E-Learning Task 1-The Choice Of Graphs

Hi Everyone, I Chose this because that this is rounded off, so it does not give an exact amount.
Goh Qian Zhe

### elearning Lesson Task 1: Choice of graphs

I chose the pie chart as they stated they rounded up the numbers, so it might be inaccurate. It is also hard to calculate the individual types of weather

### eLearning Lesson 1 Task 1: Choice of Graphs

I felt that the the pie chart is inappropriate as the weather is not a number of any sort but is instead it is a condition which I believe is best shown as a pictogram.

### E-learning lesson 1 task 1 --- choice of graphs

 i think that the pie chart is irrelevant because it only shows the percentage and we still need to calculate but the others show the number of countries so they are more relevant

### eLearning Lesson 1 Task 1: Choice of Graphs

I feel that the pie graph is incorrect as it does not give an accurate number of the weather.

### eLearning Lesson 1 Task 1: Choice of Graphs

I feel that the line graph is inappropriate as weather is not in the numerical form and is a condition.

### E-learning activity 1

The line graph is inappropriate as it does not show the places that are affected but only shows the difference of the places affected by specific weathers.

Done by:achutha karuppiah

### Getting to know MacRitchie Treetop walk

Exact:1st in Singapore. 2 Highest points. Opening Hours.
Approximated:Walk distance/Walk time. Height of walk. Length of walk.

### Getting to know istana kampong glam

Approximate                Exact
23 hectares               2004 (year)
\$250,000                1819(year)
\$350,000               1824(year)
The 1040 animals, 120 species and the 29% are probably exact
The 63 million, 1.1 million visitors and the 40 hectares are probably approximate

### Getting to know Jurong Bird Park

The exact figures are 35m, 167 species and 25 large aviaries.
The approximated figures are 1500 free flying birds, \$7 million and 9 storey.
Poon Wai Kit (19)

### Marina Barrage

Getting to know Singapore-Marina Barrage(Chew Yun Hui-04)

### Getting to know NEWater visitor centre

Approximated numbers : 3 decades, 30% , 50mgd
Exact figures: 1972,1974,1998

-Jiawen