## Friday, 28 August 2015

### Inverse Proportion (Examples) Half-Lives of Elements

One approach to describing reaction rates is based on the time required for the concentration of a reactant to decrease to one-half its initial value. This period of time is called the half-life of the reaction, written as t1/2

Term:
an asymptote (/ˈæsɪmptt/) of a curve is a line such that the distance between the curve and the line approaches zero as they tend to infinity.

Other interesting read: Nuclear Disaster in Japan

Question 1

Question 2

## Monday, 17 August 2015

### Romeo & Juliet apply Pythagoras Theorem!

You are going to post your proposed solutions of the various scenarios in the slides

GROUP 1

GROUP 2

GROUP 3

GROUP 4

## Friday, 14 August 2015

### Area of Parallelogram & Trapezium

Watch the following examples. Each comes with a question and the explanation on how to solve the problem.
1. Pause the question. Read the diagram carefully and think what formula would help you to solve for the unknown.
2. Think how you would solve the problem - you may need to write down an equation in order to solve for the unknown.
3. Next, continue to watch the clip and listen to the explanation. Is this similar to what you have thought of? Look out for the presentation of the working.

### Relating Volume of CONE with Volume of CYLINDER

The volume of a cone fills up one-third of the volume of cylinder, i.e. we need three cones to fill up a cylinder.

### Investigating: Volume and Surface Area of Sphere

What's the relationship between the volume of a cylinder and a sphere

To examine the total surface area of a sphere

### Geometry with Donald!

The short clip beautifully connects various concepts that we've learnt and will be learning in the next couple of weeks.

Look out for the concepts that you are familiar with (e.g. Golden Ratio)

Enjoy your exploration with Donald Duck!

## Thursday, 13 August 2015

### Nets: Warming Up Activity 0

Draw a net for the cube with side 3 cm.

What's wrong with these nets?
Net 1:

Net 2:

Net 3:

## Tuesday, 11 August 2015

### Application of Geometrical Construction Knowledge

The slides are 'viewable' by everybody.
However, the access is limited to the members of each group only.

Group 1

Group 2

Group 3

Group 4

## Wednesday, 5 August 2015

### Treasure Hunt @ SST

At the end of the lesson,
Treasures A and C are not claimed yet.

## Monday, 3 August 2015

### Data Handling: Pop Quizzes 9-10 (Dot Diagrams and Stem-and-Leaf Diagrams)

With reference to the Handout (Pop Quizzes 9-10), enter your answers into the Form below.
You can scroll down to check the answers.