A sample of my video lessons
My preferred audience is from grade 6 -10, since that is when they are introduced to abstract and non-intuitive concepts for the first time, such as force and acceleration, the work-energy theorem, electric current and potential difference, propagation of different kinds of waves, etc. Here's a brief sample of my lessons :
Concept-based Solved Problems
Why does the Earth not fall into the moon?
Give the force of gravitation 'F' is the same on both, why are their motions different?
Find the hidden device in the box
If you knew how the rays going in and coming out looked, can you guess the glass-object in the box?
Can astronauts hear each other in outer space?
If you screamed to your friend in space, can they hear you? Why not? Does the same go for shining a torch?
DIYs, Experiments and Supplementary Videos
The northern lights, or the aurora borealis, are beautiful dancing waves of light that have captivated people for millennia. But for all its beauty, this spectacular light show is a rather violent event. A little knowledge of electromagnetism and charged particles is all we need to find out what causes it!
The 4-colour problem is one of the most famous mathematical problems. It resisted proof for more than a hundred years before finally succumbing; in the end, there was a valid proof, but one that relied on more than a thousand hours of computer time!
Let's see what made this problem so horrendously difficult to solve!
Newton said in his 1st Law that objects in motion want to keep moving and objects that are stationary want to stay still—unless an outside force acts on them. We call this the 'law of of inertia'.
But since we're never content with just reading about it, let's perform a fun experiment to drop an egg into a beaker of water, and watch the 1st law in action!
Twinkle, twinkle little star, how I wonder what you are! Good for a nursery rhyme, but unscientific for a concept, because stars do not actually twinkle, they only appear to do so from Earth!
Join me as we get to the bottom of this illusion, and let me introduce you to the main culprit - atmospheric refraction!
Chemical reactions can be fascinating to observe! Using household ingredients, I show you how bleach works to neutralize food coloring in water. While it may look like magic, this is just an example of oxidation.
When you add baking soda to this, the oxidation process occurs more quickly for a vivid transformation from colored water to clear water!
Heat makes the air inside the tea bag less dense than the air outside of it. This creates a convection current that lifts the ash from your burning tea bag and sends it flying upward. This is the very concept that lies behind hot-air balloons and sky lanterns!
Let's make our own little tea bag lantern and watch it take off!
A reflex action is an involuntary or automatic action that your body does in response to something — without you even having to think about it. You don't 'decide' to blink when dust gets into your eye, you just blink!
So, does 'no thinking' mean the brain's not involved? Let's find out!