Percentages in Singapore BUDGET

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Links to budget-related articles:

• Budget Statement 2007
• Singapore Buduget 2019: GST to be raised from 7% to 9% some time between 2021 and 2025

[HW] Estimation - An application (Workbook p54)

Click HERE to access padlet

[Homework] 14 Feb - Consolidation & Preparation

Summary of what we did yesterday: 

• Discussion on Rounding off to different degree of accuracy: Significant Figures VS Decimal Places
• Rule of Thumb: (1) Read the number from left to right (2) Look for the first non-zero 
• Discussed: 
• answers of exercises in p4 & p5 of the Study Notes
• the rounding off of figures in a real world context (load of bridge; supermarket)
• Approximation with error: Area of square > length of square > parameter of square

Homework: 

• [HW1] [HW2] [HW3] To be submitted via GoogleForms - Deadline: MON 17 Feb, 5 pm
• Attempt lessons assigned in the Google Classroom

[HW] Rounding off with Paul and Pauline

Guess My Age

PRECISE/ EXACT: When... to be OR not to be?

When do we decide to report the exact figure, and when do we not?

Let's take a look at the reporting of the spread of the Novel Coronavirus by the different news agencies:

• Channel NewsAsia: Latest stories
• New York Times: Coronavirus Map: Tracking the Spread of the Outbreak
• MOH Website: Updates on 2019 Novel Coronavirus (2019-NCOV) Local Situation

Why the data are presented differently in different medium?
Considerations: Purpose, Audience, Context, Culture 

[Discussion] Approximation: What are the EXTREMES?

In this activity, you are going to read TWO articles where approximated values are used.

• Article 1: IT talent in short supply amid Smart Nation push
• Article 2: 'Cockroach robot' may become rescue tool

Your task is to figure out what are the possible extreme figures in each scenario.

• Click HERE to attempt the task.
• Click HERE to check your answers

[Homework] 7 Feb - Consolidation & Preparation

Below is the list of items we spoke about in class in the last lesson of the week (T1W5):

1. [HW2] for Chapter 2 (written work)

• It was posted in the Maths Google Classroom on Thursday (6 Feb)
• Refer to the details in the Google Classroom post, including the template on how you should present your answers. 
• To be submitted in the 1st Maths lesson of the week (T1W6)

2. Group assignment (refer to the blog post below)

• You were divided into groups
• Do attempt the collaborative work in the slide assigned.
• Complete the task (if your group has not finished yet)

3. Preparation for next topic, Approximation & Estimation

• Refer to the materials assigned in SLS

Other important information

• Class Test date and requirements (see information on the right panel of the blog)
• Timed Revision - has been re-scheduled to Tuesday (11 Feb) after school 
• Topic 1 & Topic 2
• Calculator is required (no sharing)
• Answer all questions in ink

4 Operations of Rational Numbers: Who has better Eye Power?

Study Notes (15) Tier B
With reference to the working you attempted, as a group, discuss and identify the errors of each set of working.

• GROUP FOLDER

Click HERE to access slides (used for discussion)

Key Pointers for Operations of Rational Numbers (Fractions) - Study Notes (p14)

On Wednesday's lesson, we learnt the operations of FRACTIONS (Rational Numbers)

Read the working of the questions.
Recall the BODMAS rules for operations and the general tips we discussed in the lessons.
Let's see how these are applied in the Operations of Rational Numbers (Fractions)

LINK

Operations with Integers

Click HERE to watch 3 examples on how to apply BODMAS rule to evaluate arithmetic expressions systematically.

[Dipstick] 4 Operations involving Integers and Rational Numbers

Source: Study Notes (p9)

This is a dipstick exercise to expose you on the 4 operations of integers, building on what you already learnt in primary school for positive integers.

The objective is to find out to what extent you could apply and extend your pre-requisite knowledge before we move into the topic.

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This is how we should present the working, demonstrating our understanding of the operations.

Attempt the 2 parts in your Study Notes (p9)

Complete it by TUESDAY (4 FEB) 9 am and post the photo in the relevant padlet. 

LINK

[HW] Expressing them in (directed) NUMBERS

Click HERE

Introduction: Real Numbers - How deep is deep?

Class Discussion:

What is the distance between the two extremes (in metres)?

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You may want to click at the hyperlink to find out more about the "Challenger Deep".
Source: http://www.deepseachallenge.com/the-expedition/mariana-trench/

[Homework] 31 January - Consolidation & Preparation

A summary of the tasks assigned:

1. Google Classroom
[HW1] Selected Questions from Textbook Chapter 2 (Exercise 2D)
Focus: Rational Numbers Operations (multiplication & division; Calculator Skills
Estimated duration: 30 minutes
Follow instructions; refer to template
To be submitted on next Maths lesson (i.e. 1st Maths lesson in T1W5)

2. Number Lines
Complete the handout (based on what we learnt on Friday)

3. Preparation for next lesson
Watch the clips in the Blog page


4. [Optional] Food for Thought
Blog Post (below)