# [S3] Lesson 44 : COE / DC Part 1 + Nature of Functions + Atmosphere I Updates/Debrief

[S3 Physics PMCians]

What we did in 2 hours:

In the last lesson, we learnt about the 3 important quantities found in Electricity (Current, Voltage and Resistance) and how they relate to each other. We also learnt how to determine effective resistance in a circuit, utilising the shortcut method as best as possible to speed up our problem solving process. By now, most of you should be experts at finding resistance and probably faster than your friends in school in solving circuits. =)

Try constructing a circuit with this simulator and see how the different components respond. Have fun!

Special Mention:

Next week, we’ll continue with our Electricity lesson, and you will be learning how to determine Current and Potential Difference in different types of circuits.

See you in class!  😀

[S3 Maths PMCians]

What we did in 2 hours:

Last week, we continued to learn about stationary points. We learnt how to find:

1)      The coordinates of the stationary points

2)      The nature of the stationary points (maximum/minimum/point of inflexion) using first or second derivative test.

Special Mention:

In the next lesson, we will look at more applications of differentiation: Maxima/minima problems.
We will need all the techniques of differentiation we have covered so far. Please revise the first two booklets.

See you in class!

Your friendly PMC S3 Math tutors

[S3 Chemistry PMCians]

What we did in 2 hours:

We have kickstarted our learning in Air & Atmosphere where we learnt the composition of air (78% nitrogen, 21% oxygen, 1% carbon dioxide & noble gases) and several pollutants and their source and effect (prioritise oxides of nitrogen, sulfur dioxide and carbon monoxide!).

Special Mention:

We will complete our learning in Air & Atmosphere by learning more about how chlorofluorocarbons destroy the ozone and exploring solutions to tackle pollutant emissions.

Here’s a quick video on the ozone layer and why it matters to mankind:

Do bring your EOY exam papers over the next two weeks for a quick feedback on your strengths, areas of improvement and receive customised advice/materials for your revision this holiday!

Regards,

Mr Jacob

PMC NEW NORMAL

Students can choose to attend any of the timeslots onsite in the respective outlets or live from home at the same timing. There will be both ONSITE and ONLINE audience for all classes. ONSITE and ONLINE students will be able to interact with one another and the tutor will be able to engage both audiences. Both platforms (onsite and online) will be carried out concurrently, ensuring that students in the physical classroom and those attending lessons via Zoom are taught exactly the same content, at the same time, by the same tutor.