Lie, Lay or Laid
English tip: Lie/Lay/Laid? There are many scenarios to use this word. It
Population, community, habitat
Science tip: Words like "populations", "community", "consumers" and "producers" are specific scientific terms in biology and PSLE Science. Although we don’t use these terms if we’re not an ecologist, it is important to learn these in order to ace your Science exam. Population: a group of plants and animals of the same kind, living and[…]
Evaporation is faster when wind blows
Science tip: qn: "my gal asked if evaporation will be faster with wind. I answered "Yes" but am stuck when we have to explain why?" ans: When water evaporates, the water molecules are released into the air. Water molecules can also go back from the air into the water. When humidity is at 100%, the[…]
Salt and melting of water
Science tip: Qn: "A test-tube filled with some water is placed in a beaker containing some ice. If salt is added to the ice, the water in the test-tube will freeze. But I thought salt will lower the freezing point of water and hence the ice in the beaker will melt? Isn’t that the reason[…]
It’s versus Its
English tip: This is also a very common error. A teacher will have the impression that you are a weak student if you make this mistake. IT
Adaptation of camels
Science tip: Qn: Camel can drink large amount of water at a time and it has capacity to stay long without water in hot dessert. Is this structural adaptation or behavioral? Ans: Its mostly structural rather than behavioural. The Kangaroo Rat is an interesting animal that can illustrate both structural and behavioural adaptations. Structural: they[…]
Your versus You’re
English tip: This is a pet peeve of mine. A lot of people, including adults, can
Solving it backwards
Maths tip Sometimes the question calls for solving it backwards. Keep an open mind and try to tackle the problem from multiple ways. Here’s an example: Cindy, Dick and Eddy had $410 altogether. Cindy gave 1/3 of her money to Eddy. Dick then gave 2/5 of his money to Cindy. As a result, Dick had[…]