I thought I should share this before I threw it away! These words were written in milk – it’s completely invisible when it dries up. But hold it over a candle flame, and the words appear! The milk contains fats and acids which reacts with the heat, changing its colour more than the paper it’s[…]
Does this image look familiar? I came across this in a P3 science textbook. It is WRONG. The tongue is NOT divided into sections which are exclusively responsible for different basic tastes. Read here for more info: http://studyroom.sg/tongue-map/
It’s fun to play true/false games to: 1. test understanding 2. help with absorption and memory recall. True/false questions are quick and engaging – any misunderstandings can also be quickly corrected on the spot. Here I’ve used red cards for false and green cards for true.
Parents can continuously engage their child by asking questions, like – Why do I bag my meat and fish in a zip-lock bag before I put them in the freezer? – What do you think happens if I don’t add baking powder in my cakes? – Do you think crushed ice cools down a drink[…]
Our classes (Part 2) – Science Classes I am a Science geek. *Brag alert* Which is why I had As for Physics, Biology, Chemistry in my O and A Levels, had a distinction for S paper in Physics and two medals in the Singapore Chemistry Olympiad. I love and live Science. And I want to[…]
Digestive juices are produced in the mouth, the stomach, and the small intestine. Mouth – main role is to chew / churn and secrete digestive juice (saliva). Stomach – main role is to digest and secrete digestive juice. Small intestine – main role is to digest and absorb food (not water) and secrete digestive juice.[…]
The heart pumps blood throughout the body. The blood serves as the medium to transport oxygen, carbon dioxide, food, and other substances to the various parts of the body. The human circulatory system (and also that of many animals) is a “double circulatory system”. One circuit goes to the lungs, where the blood is able[…]
This is another trick question. The family tree below shows the children and grandchildren of a female carrier of colour-blindness and a male who is not colour-blind. The question is: How many of the daughters or granddaughters are NOT colour-blind? ==================== The answer is 5 (not 7). Beware, do not count daughters-in-law and other members[…]
Insects There are two groups of insects. In the first group, including insects such as cockroaches, grasshoppers, dragonflies and bugs, the wings develop gradually on the outside of the body and get larger at each moult until they are fully formed. The young stages of these insects are called nymphs and they usually resemble the[…]
The inner core of the Earth is not molten. It is actually a solid core of mostly Nickel and Iron, and is roughly 1200km in diameter! The inner core of the Earth also contains much gold, platinum and other precious metals. Unfortunately there isn’t a way to get to it yet.