Units Matter! A costy mistake

Do you know that NASA lost the $125 million Mars Climate Orbiter due to an error in unit?  

Learn more about this: 

• From CNN.com: Metric mishap caused loss of NASA orbiter
• A blog post in SIMSCALE: NASA’S LOST SPACECRAFT The Metric System and NASA's Mars Climate Orbiter

Looking at numbrs, statistics from another perspective: Information VS misinformation

 

Construction: Hologram activity

 Click HERE to post your work

Geometrical Construction: Quadrilaterals (b)(c)

 Study Notes (p11, p12)

(b) Construction of Parallelogram

Click HERE

(c) Construction of Quadrilateral

Click HERE

(Class work) Review: Relationships of Lines

Geometrical Construction: Triangles (c)(d)

Study Notes (p7, p8)

TRIANGLE (c) Click HERE

TRIANGLE (d) Click HERE

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Class Work: Where will they meet?

This activity involves construction of triangles (given specific properties) and application of perpendicular bisectors.

Geometrical Construction: Perpendicular Bisector

 This is a task carried out during lesson. 

Post a photo of your work as an evidence that you could construct the pair of perpendicular bisectors. Remember that the pencil marks (especially the arcs) are clear.

Click HERE to access padlet

Geometrical Construction: Angle Bisector

 This is a task carried out during lesson. 

Post a photo of your work as an evidence that you could construct the pair of perpendicular bisectors. Remember that the pencil marks (especially the arcs) are clear.

Click HERE to access padlet

Exploring: ORDER of ROTATION

 Click HERE to access the activity

Mathematics in Handicraft: Corner Bookmarks

Do you notice that the link between basic Geometrical Shapes and Origami?

Can you tell what are shapes formed and the angle properties that are commonly used in origami?



Going deeper: Linking Mathematics and Physics... through Origami




YOUR MISSION

As you create your bookmark, observe how the square has transformed.

• Post a photo of your bookmark here.
• List down as many mathematical terms as possible that you can think of, that are related to this activity.
• You may also want to describe any relationship that you see in the process.

Click HERE

Polygons: Investigative activity - Interior and Exterior angles

 Click HERE to access padlet

Polygons: Who am I?

 Click HERE to access form

Click HERE to access responses

Dimensions...

Let's hear the transition from 0 dimension to .... dimension!

THINK: What helps us define dimension?

Click HERE to access clip from Youtube




You may read more about dimensions HERE

[Challenging Question] Solve the Unstoppable Blob Riddle!

"Watch" the challenging question and take note of the given conditions before solving the problem.
Amazing to see how polygons save the world!

Hexagons: What I already know. What I know.

Click HERE to access link.

Click HERE to view responses

Concept Cartoons: Angle Properties

 Click HERE to access the task.

Click HERE to view responses

Class Work: Graph Sketching

Study Notes (p24)

Click HERE to access padlet

[HW4: PART 1] Concepts of Gradient & Vertical Intercepts

Study Notes (p14-p15) Estimated Duration: 15 minutes

We are going to find out the graph of a straight line in the form of y = mx + c changes when either m or c varies

1. Go to the following website to access the online Desmos file
URL: https://www.desmos.com/calculator/9rwlqrptu2

2. Record your observations on the behaviour of the graph
A list of words that might be useful when filling in the blanks: 
Upward | Downward | Rotate | Slant | Gentle | Steep | Horizontal | Vertical | Perpendicular | Parallel | Gradient | Positive | Negative | Zero | x-intercept | y-intercept | intersection | x-coordinate | y-coordinate | Direction 


3. Upload IMAGES of your completed work (p14-p15) as 2 separate posts in the padlet:
Click HERE to access.

[HW4: Part 2] Finding Gradient & Intercept to form Linear Equation

Click HERE to access padlet

You may find the following useful before doing the task above - to recap GRADIENT

The greatest mathematician that never lived...

We have started learning functions this week (T3W7).
Do you know there is a relationship between the greatest mathematician and functions?
Watch the clip... you will hear some familiar words in our vocabulary list.

Enjoy.... 

Unit 7 My very 1st PLOT

Click HERE to access padlet.

Why is data IMPORTANT to our country?

WHY DATA?

https://www.singstat.gov.sg/about-us/vision-and-mission#vsms 

• Why is data important to our country? 
• How do the different government and non-government agencies make use of such data for planning?

Click HERE to access the website of the Singapore Department of Statistics.

Seeing Singapore through data....

https://data.gov.sg/

YOUR MISSION

Click HERE to access the mission

(Discussion) Misleading Charts: News Reporting - Robberies

Do you consider the reporter’s statement to be a reasonable interpretation of the graph?

[Class Discussion] Understanding INTENT behind the Report (data)

 Click HERE to access the padlet

Data Handling: Getting Ready for next lesson

Stage 2: Data collection
Number of class each member of S1-08 has at home
Data collected on 24 June 2020 with 29 entries

4 Stages

Data Handling: Why do we collect data?

Click HERE to access the Census of Population 2020 website.

Class Discussions: Word Problems involving Inequalities

Making connection: Polya's 4 steps for Problem Solving & Solving Word Problems

Solving Word Problems Systematically

Click HERE to access padlet.

REMINDER: MATHS CLASS TEST 2

As spoken in class, this is posted in the Google Classroom, information about the test.

We will have a timed revision tomorrow (16 June).

Inequalities: Practice 4 - Connecting to Number Lines & Reasoning out Relationships

In this activity, you will discuss the questions with the assigned partner(s) for Practice 4.

On your own, you must to submit your answers via the GoogleForm.

Estimated duration: 30minutes

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This practice requires you solve the inequalities and think how it could be presented in a number line (making connection in the visual form)

• You did this in Unit 2 (without solving inequalities)

Questions 10 to 20 is where the discussion becomes useful. 

- to look "deeper" "within" the inequality (Relationships!)

Click HERE to attempt the task.

The quiz will be automarked - check your answers after submission.

Inequalities: Introduction

This is a HBL asynchronous lesson conducted on 8 June.
Refer to the DETAILS (Instructions and materials) in the Google Classroom. 
Key resources are re-posted here for ease of reference.

(A) WARMING UP (approx 5min)



Short Quizzes

• (a) Chap 5B Inequalities - Getting to know the Symbols
• (b) Chap 5B Inequalities - Transitive Property

(B) MAIN COURSE (approx 25min)

Attempt the LESSON in SLS

• Attempt (Handout) Practice 1
• Submit your answers HERE. A copy of the marked "script" will be emailed to you.
• You can also click HERE to read the working and answers.

Algebra: Application (I)

Detailed working of the 2 questions that we disucssed in the previous lesson.

In the working below, 2 methods are shown: 

• Method 1: Factorisation
• Method 2: Expansion

You will find method 1 easier to manage though many of you are incline to expand the expression (Method 2). Do note Method 2 usually requires us to apply what's to be covered in Sec 2. 

Algebra: Connecting what we know so far...

Click HERE to access padlet

[Updated after lesson]
The "Retrieval" exercise that helps us to see what we learnt in Algebra in totality.

Mid-Year Holiday Consultation (Weeks 3&4)

Updated on 18 May 2020

Let's discuss... What's expected from these questions: