Lift on an Aerofoil: Coanda Effect, not Bernoulli
The commonly taught explanation (for people from my generation) for how airplanes generate lift often relies on the Bernoulli Principle, which states that faster airflow over the...
Blog
How Nuclear Fusion can be achieved
Helion Energy is currently aiming to produce nuclear fusion energy commercially by 2028 . The idea behind how it intends to do so is well-described in the video above. Imagine one...
UX design considerations for GeoGebra apps
Having started with making interactive simulations or visualisation apps with Easy JavaScript Simulations (EJsS) under the guidance of Senior Specialist Lawrence Wee from ETD in...
Simulation on the effect of vaccination on the spread of Covid-19
My ex-colleague Lawrence did a simplified simulation on how vaccination can work to slow down the spread of Covid-19. It shows a clear correlation between rate of transmission and...
Hydraulic Elevator
This is a hydraulic lift kit for kids that was purchased online for only S$2.10 from Shopee , with free shipping! I am not, in anyway, affiliated to this, but simply sharing about...
Documenting this website's migration
After years of hosting my website on a traditional webhosting service that has seen multiple service disruption over the years, I have switched to Amazon Web Services, which is...
Home-Based Learning Using Google Meet
I conducted an online lecture this morning using Google Meet for the students who had to stay home due to the Leave of Absence mandated by the Ministry since they had recently...
Review of Sci-sational Christmas at Science Centre Singapore
In a nutshell, Sci-sational Christmas offers value-for-money interactive family festive fun. Open from 1 to 25 Dec 2019 at the Annexe of Science Centre Singapore, visitors will...
one-north Festival 2019
https://www.seriouslyscience.sg/one-north-Festival/Overview Happening now from 13-14 Sept 2019 at one-north. My colleagues and I took the opportunity to visit the exhibitions...
Iconic Voices from MIT: Opening a New Window into the Universe with Dr Nergis Mavalvala
This is a free public lecture by Dr Nergis Mavalvala (an astrophysicist from MIT) on how her team detected gravitational waves generated from colliding black holes and...
Updates
I have not been posting in this blog for a while as I have been rather busy in my new role at the Ministry of Education HQ. My main area of work is related to the Singapore...
Water Wheel Challenge
My school organises a competition for upper primary pupils in Singapore annually. Called the THINK Challenge, it gets participants to engage in problem-solving with a little help...
Concrete to Abstract
As I was teaching the use of the potential divider equation to my IP4 (Grade 10) students last week, I approached it by teaching the rules first before showing worked examples....
8 Steps to Ace that Planning Question
The Planning Question is the last question on Paper 2 of the 9646 H2 Physics paper in the Singapore-Cambridge GCE A-Levels. It carries 12 marks out of 72 in the paper, which lasts...
Physics Flipped Classroom and Thinking Routines
2nd Anglican High School National Symposium Sharing by Mr Cheah Chien Lead. Mdm Hidayah from AHS Flipped classroom for heat capacity (videos - asked students to search for videos,...
Physics in Venn Diagrams
How Permanent Magnets Come About
I love the segment about magnetic "domains". Rule with an "iron fist". Two of my favourite Youtube channels worked together to make this video.
Breaking Glass with Sound
This video shows yet another demonstration for the effect of resonance, when the sound frequency is equal to the natural frequency of the glass. I have yet to conduct this...
P6 Science Question on Light Bulb
This picture has been making its way around the internet. This is a Primary 6 Science question that has a questionable answer. As teachers, there are times when we make mistakes...
Make Your Own Comic Strip for Teaching!
A concept cartoon is an innovative way of eliciting discussions about science concepts. For example, it can present differing views on a scientific phenomenon from different...
How to survive a lightning strike
This is an interesting question on electricity: in order to survive a lightning strike, which of the following costumes offer the best protection? A coat of armour, your birthday...
Electromagnetism Lecture
I enjoy lecturing on topics like Superposition and Electromagnetism in the GCE A-level syllabus as they lend themselves well to the use of fun demonstrations that I can perform in...
Thorium as an alternative source of nuclear energy
It's about time Singapore considered building a liquid fluoride thorium reactor as a safe source of nuclear energy. From the video, it would appear that thorium is safe as it...