Wednesday, 30 July 2014

Revision Papers for Level Test 2 - MGS papers

Please note that the following have been uploaded to the GoogleSite - for your reference & practice:
GoogleSite > Mathematics > Class page > Folder: 02 Revision

Note that we will not be printing this revision paper for you.

Tuesday, 29 July 2014

Basic Geometry: An Introduction

Today, we started the topic by understanding the vocabulary of Geometry - some commonly used words related to the topic and what they mean.

Preparation for the next lesson:

Homework - refer to the separate set of handout given to you (distributed after lesson)
after going through the above, attempt the 1st sheet of homework (Unit 13.1 Basic Geometry)
Do on this sheet of paper, at the spaces available. 

For Q5, 
  • Form an equation with the unknowns and the given angles
  • remember to write down the reasons
  • Refer to the lesson in GoogleSite on how to present the working properly.

Saturday, 26 July 2014

[Some Tips] Presentation of Working for Word Problems

As iterated in class (many times), it is important for us to present our working clearly so that whoever reading your working (and answers) is able to understand your train of thoughts. In addition, proper working presentation is also a demonstration of your understanding of concepts.

Below is a guide (by Mr Desmond Peh) on how you should present your working, especially when answering to word problems.

  • By the way, can you spot one part of the working that could be further improved?

Thursday, 24 July 2014

Speed: The Science of Lightning

Study Notes (p19): Challenge (Tier C)

Here are some additional information on the discussion:

Which media does sound travel fastest in?
  • Vacuum? Air? Water? Solid?

Tuesday, 22 July 2014

Ratio: Study Notes Q16 Suggested Answer

Please see below, the suggested way of solving the problem (using algebra, right from the start).
This would be a good strategy, especially if you are required to SHOW the answer is 40/89

While by substituting numbers work (as most of you have attempted in that manner), you would notice that you could substitute different sets of numbers in the expression, and yet you still get 40/89; then how would you explain that?
(there's where algebra comes in to help generalise their explanation....)

Group 3 Answer :)

Ratio Question pg 8 by Group 4


y:z= 5:8



2y/3x-y+2z = 2(20) /( 3(15)-20+ 2(32))
                   = 40/(45-20+64)

                    = 40/89

By  group 4

Group #radioactiveturtle Group 1

Group 2

Monday, 21 July 2014

Ratio - Pathologists and Ratios

Study Notes (p3)

Click HERE to view the data submitted.

What pattern did you observed amongst the ratios computed?

For those who are interested to find out more, HERE's a thesis paper on "The Foot Length to Stature Ratio: A Study of Racial Variance" (1990)

Ratio: Homework

Homework - for tomorrow's discussion:
Study notes: p5 to p9
  • Class Work 1 (Tier A)
  • Class Work 2 (Tier B)
  • Class Work 3 (Tier B)
  • Class Work 4 (Tier C)

Sunday, 20 July 2014

Summative Assessment: Percentages

Re: Reschedule of assessment for those who are unable to turn up on 18 July (1.30 pm)

Hi Everybody

As you did not turn up for the summative assessment on Friday 1.30 pm (for various reasons),  I've re-scheduled you to take the assessment on
Day/ Date: MONDAY 21 July
Time: 3 pm
Venue: S1-01 classroom

Remember to bring along your calculator.
The maximum duration of the paper is about 30 minutes.
You may leave immediately when you finish the paper.

With regards
Ms Loh

Who needed to attend:

Saturday, 19 July 2014

6 AM Quiz: Linking Proportion & Percentages

Inverse Proportion: Examples 2 & 3 (p10)

In the last lesson, we discussed "Inverse Proportion" and did 2 examples

Below is what we discussed, and how we should present our working:

Taking a closer look at Direct & Inverse Proportions

From the two lessons, we learnt how the equations look like for direct and inverse proportion, i.e. the position of the term on the right.

Here are the 2 groups of equations:
Group 1: Equations that demonstrate direct proportion
Group 2: Equations that demonstrate inverse proportion

Direct Proportion (Group 1)
Enter the equations, one at a time into grapher and observe the lines.
If you examine the graphs in this group carefully, what are the common characteristics that you notice about the lines?

Inverse Proportion (Group 2)
Enter the equations, one at a time into grapher and observe the lines.
Why do the graphs behave in this manner?
Clue: It has something to do with the position of the x term.

If you examine the graphs in this group carefully, what are the common characteristics that you notice about the lines?

Point to Ponder:
Compare the 2 groups of graphs, what are the common characteristics? 

Thursday, 17 July 2014

Direct Proportion: Quick Check

You may click HERE to access the Form or attempt the questions in the embedded form below

Click HERE to view your responses

As discussed in class, here's how the working to the questions to be presented:

Level Test 2 Info

Information was posted in the GoogleSite Announcement Page

Wednesday, 16 July 2014

You may click HERE to access the Form or attempt the questions in the embedded form below

Click HERE to view your responses

Monday, 14 July 2014

Sunday, 13 July 2014

Data Handling HW6B: Question 2

Here the two versions of Frequency Table & Histogram presented by some of you.
For your reference.

Version 1

Version 2

You may click HERE to view the spreadsheet on how to calculate the frequency within the range.

Friday, 11 July 2014

Spreadsheet functions for Mean, Median, Mode

[Study Notes Class Work Tier A Q2 & Q3 (p18)]

Click HERE to access the spreadsheet for the questions.
  • You will not be able to edit this file.
  • Go to FILE > MAKE A COPY to save a copy of the spreadsheet into your GoogleDrive.
  • Rename it as "Data Handling (Study Notes) P18Q2Q3".
  • You are going to apply a few functions that would aid you to compute the mean, median and mode.

Thursday, 10 July 2014

Frequency Table & Histogram

[Study Notes: p10]
Here's another way that a Frequency Table may look like:

This is how the histogram looks like

  • Preparation for next lesson's discussion: Mean, Median, Mode
    • p16-p17: Read through what Mean, Median, Mode are
    • p17-p19: Attempt Tier A (Q1 to Q3) and Tier B (Q1 & Q2) questions

Tuesday, 8 July 2014

Data Handling: Frequency Table and Histogram

During lesson, we did data collection, i.e. collecting a data point from each and everyone who's present in the class. In total, we have 25 data points.

In the next lesson, we will tabulate the data in a frequency table, and use a statistical representation (i.e. a Histogram in this case) to present the data for further interpretation.

Homework: Complete Homework 6A - for submission in the next lesson.

What we have after lesson on 10 July 2014 (Thursday).

The set of data is organised in a frequency table for further interpretation.

Next, we can present the information in a statistical representation, histogram

Monday, 7 July 2014

IMPORTANT DATES: Assessment Matters

Dear S1-04

As spoken, we'll be having the Summative Assessments after school these 2 weeks.

The schedule is as shown:

Please report to the Seminar Room (Block C, Level 3, opposite SST Inc) at 1.20 pm to get ready.

Muslim boys from S1-04 will report at 2.15 pm to the Info Hub.

For more information, please refer to the calendar invite.

Alternative Assessment/ Performance Task

21 - 25 July

Level Test 2

End-of-Year Examination

Sunday, 6 July 2014

Self-Directed Learning: PERCENTAGES - Homework Submission

The following have yet submitted the self-directed learning Homework.
Please submit by Term 3 Week 2

7NGO EE YING Mathida

Linear Graphs - Determine Equation

Here's a summary of Linear Graphs

Here's how you could solve the 4 problems in p29 (Study Notes): [Playlist - 4 clips]

Friday, 4 July 2014

(Homework) (A) Linear Graphs (conclusion) (B) Data Handling (introduction)

Dear S1-04

There are 5 pieces of tasks to be completed in the next couple of days before we meet again on next Tuesday.

(A) Linear Graphs
1. Complete Homework 8C - plotting of graphs
This serves as a practice in preparation of the Summative Assessment that will take place next week.

2. Attempt the discussion questions (study notes, p30) in the blog posts - as Comments (remember to key in your group number:

(B) Data Handling
1. Complete the Flipped Lesson activity (in the previous post)

2. Go through p6 and p7 of the Study Notes and attempt those questions.
Be prepared for discussions - in particular,
  • the difference between bar Graph & Histogram
  • how to read a frequency table
3. Attempt the Activity: S1 (2014) Statistics Around Us in the GoogleSite > Maths
Click HERE for the direct link.
You will enter your responses into the GoogleForm at the end of the page.
Alternatively, you can also click HERE to access the form.

Thursday, 3 July 2014

(Flipped Learning) Introduction to Data Handling

Please refer to your study notes (p3 to p5).

The materials (including relevant video clips) for the activities in this lesson are posted in the GoogleSite > Mathematics [click to access the page directly].

We will be discussing Activities 1, 2 & 3 in tomorrow's lesson.

Homework: Study Notes (p30) Discussion 1

How would you determine if the points A (2, -5) and B (5, 2) lie on the straight line y = 3x - 5?

Key in your responses in "Comments".
Remember to enter your group number.

Homework: Study Notes (p30) Discussion 2

Describe the various ways that we can use to find out if 3 given points lie on the same straight line.

Key in your responses in "Comments".
Remember to enter your group number.

Discusion: HW8E Question 3

In the following question,

we received the following "answers"
(Ans #1) y = x - 2
(Ans #2) y = 3x - 1

Would you accept the above answers (Ans #1 , Ans #2)

On the other hand, would you accept the following answer?
= 0 is a line that is not parallel to y = 3x but has the same vertical intercept?

Discusion: HW8E Question 4

In the following question, one important consideration is the "mirror" line.
Where do you think the mirror lines going to be? How many mirror lines are there altogether.

Strategy: Sketch the graph on the paper and figure out.

This is one possibility: when the mirror line is the y-axis.
Can you tell the equation of the "reflection"?

This is one possibility: when the mirror line is the x-axis.
Can you tell the equation of the "reflection"?

(Flipped Learning) Sketching of Graph - Followed-up Activity

Some key points, discussed, when we sketch a graph, we should have the following clearly indicated on the sketch
  • x-intercept (i.e. when y = 0)
  • y-intercept (i.e. when x = 0)
  • origin, O
  • x and y axis
  • equation of the line (i.e. we must remember to label the line)
Refer to the Activity Handout that we did in class. 
For Question 3 (Tier C), click HERE to see how we could approach the question.

Tuesday, 1 July 2014

Linear Graph: What's Wrong?

We were discussing the following question this morning (HW8E, Q1(d))

and I drew the diagram on the following on the board.

What I did: I 'identified two points (2,0) and (1, 0) to calculate the gradient of the line.

Then we were 'stuck' for quite some time.

Can you tell what's wrong with the working or the approach that I used?

What you need to do...
You are required to elaborate what has gone wrong when I approach this question.
Then suggest the points you should use to compute the gradient of the line; and tell us what is the final equation of the line.

[Attempt this by tonight 1 July, 2359]
[The first most complete response will be earn 5 points for your group]

(Flipped Learning) Sketching of Graph

1. Watch the following video clips (there are 4 altogether).

2. Make reference to the Study Notes, p28 to complete the exercise.
You have to complete the 4 questions in p28 in preparation for the Discussion & Quiz in the next lesson.