Interesting Clip: 🧙‍♀️Magic tapping on Symmetry in Polgyons

In this clip, you will see how we could make use of the lines of symmetry to create cut-outs of polygons easily. Try it! 

Time to say Goodbye 👋👋 Year-End Closure Survey

Please complete the following Year-end Closure Survey before Monday (25 Oct).

The survey will get you to revisit your learning journey in the Maths Classroom this year. 

Your responses is going to be helpful to both you and your juniors 

• For YOU - as the consolidated findings will be shared with your S2 Maths teacher 
• For Your Juniors - as your feedback/ responses will be taken into account in the lesson design next year... for them

Click HERE to access the survey

Useful Tips for Exam Preparation

[Revision] Algebra & Inequalities

[Revision] Linear Functions and Graphs

Here's the set of questions that were discussed today 

Construction of Parallel Lines (2 methods)

Method 1: Using a set-square and a ruler (concept involved: perpendicular line - right angle in a set- square)

LINK

Method 2: Using a pair of compasses (concept involved: Radius of Circle)

LINK

 

[Bite Size] Construction of Triangles: 1 angle & 2 sides

Reference: Study Notes (p6 & p7)

Post a photo of your work in the padlets. 

PAGE 6: LINK to access Padlet

PAGE 7: LINK to access Padlet

[Exploration] Construction: A point that is equidistant from all vertices of a TRIANGLE

Click HERE to access the padlet

[Summary] Construction of Perpendicular & Angle Bisectors

Construction of Perpendicular Bisectors & Angle Bisectors

Construction of Perpendicular Bisector

Construction of Angle Bisector 

Construction #1: Rescue Grandma using Geometrical Construction!

Read the scenario below carefully. We had a brief discussion in class. 

Try this on the handout. 

We shall discuss this when we meet on MONDAY

Construction #2: Where are You, Celine? Where Shall We Meet?

Read the scenario below. Try figure out how you could locate the meeting point the three friends..

We shall discuss this when we meet on MONDAY.

[Bite Size] Polygons N2020/P1/Q21

Click HERE to access the GoogleForm. 

Click HERE to view the responses and feedback given

Rotational Symmetry (Activity 4)

LINK to activity

 

Hands on to find....Sum of Exterior Angles of a Polygon

Click HERE to access padlet

Quadrilaterals: Who am I?

Refer to the Study Notes (p7) and study the properties of the quadrilaterals

Guess the Quadrilaterals

You would receive a copy of the marked script via email.

Hexagons: What I already know. What I just discovered

Study Notes (p2)

Click HERE to share the "BEFORE" and "AFTER" after the discussion.

• The RESPONSES

Angles involving Parallel lines and Transverals

In the class, we discussed how to approach the questions and learnt that there are usually multiple ways to solve the same problem. This also implies the clarity of presentation is important so that one can follow your train of thought. 

Here are examples the problems can be solved. 

IMPORTANT: Look out for how the angle properties are presented

STUDY NOTES (p11)

Basic Geometry (Study Notes p8) Presentation of working (with angle properties)

Here are the SAMPLES of working presentation that you ought to be following for HW1

 

Warming up ABCDEF

 

[Bite Size] Basic Geometry: Recall Our Pre-requisites

ACTIVITY 1

Click HERE to access the padlet

ACTIVITY 2

• [GoogleForm] Study Notes (p6)
• Responses

Application in Real World Situations

• Task 1 (source: Textbook 1A Chap 6 Practice Now 5) [RESPONSES]
• Task 2 (source: Textbook 1A Chap 6 Review Exercise 6 (p176) Q8 [RESPONSES]
• Task 3 (source: Textbook 1A Chap 6 Review Exercise 6 (p175) Q7 [RESPONSES]

[Test Your Eye Power] Determining Equations of Lines

Access the GoogleForm to submit your answers

Updated: 25 AUG 2021: Click HERE to see responses.

 

[Bite Size] Graph Sketching

Click HERE to access the padlet 

["Bigger" Bite-size] Determinng Equation of the Graph (approx. 20min)

Click HERE to access the padlet

Are they Parallel? Are they not?

 

What's the Point?

[Bite Size] Application of Formula to find GRADIENT - to be completed before 18AUG (WED)

Click HERE to access the padlet 

[Investigative activity] Significance of "c" and "m" in a linear equation (Study Notes p16 & p17)

 LINK to desmo file

1. Follow the step-by-step instructions to manipulate the file ("c" and "m")

2. Record your observations in the handout

[Bite Size 10min] Plotting Linear Graphs (Study Notes p13) Class Work 2 - Complete BEFORE 16 AUG

Click HERE to access the padlet 

Plotting Linear Graphs (Study Notes p13) Class Work 1

Click HERE to access padlet

[A Challenge] Linear Graphs: My 1st PLOT

Click HERE to access the padlet.

[Bite Size] Am I familiar with Coordinates?

Click HERE to attempt the bite size task 

Click HERE to see check the answers. (Link will be available on the next day)

[Bite Size] Graphs in Real Life

What does this graph tell?

Click HERE to access the form 

Click HERE to view the responses (link will be available the next day)

Number Sequence: Pair Discussion

Click HERE to access padlet.

Number Sequence: Recamán's sequence - we see. we hear

Click HERE 

Misleadng Graphs

LINK: https://venngage.com/blog/misleading-graphs/

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

 

Introduction: Data Handling - Statistical Investigation

Some new words/ phrases are introduced during the lesson:

• Data points, Sample Size (n ≥ 30)
• Raw data
• Respondents/ Participants
• Survey (as an action/ process or an instrument to collect information)
• Mean, Mode, Median
• Frequency Table, Tally

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[Bite Size] Review of Solving Inequalities

Click HERE to access padlet

[Bite Size] Solving Simple Inequalities

Click HERE to access padlet 

[Bite Size] Review of Unit 5 HW1 (common errors)

Click HERE to access padlet

 

[Bite Size] Solving WORD Problem (1)

Click HERE to access Padlet

 

[Bite Size] Review of Solving of Word Problems involving Algebra (apply POLYA's 4-steps)

Click HERE to acccess the padlet 

Discussion: Meaningful Equation... Area of a Sphere (p17 Class Work 4)

Here's something to help us remember to formula for the Surface Area of a Sphere 😉

Discussion: Meaningful Equation... Area of Trapezium (Study Notes p16 Example 5)

To derive the formula for the area of a Trapezium 

(application of factorisation)

[Challenging Question] Algebra - Factorisation (Hybrid)

Clear and systematic solution👏👏👏 , presented by Irina and Jeremy