Plural or singular with "either

English tip: When there’s "either" and "or" in a sentence, do we use the singular or plural form? Which is correct: Either James or the boys is cleaning the house. OR Either James or the boys are cleaning the house. The rule here is: the subject that’s closer to the verb calls the shot! Example:[…]

Evaporation absorbs heat energy

Science tip: Evaporation of water absorbs heat energy from the surroundings. The full explanation is out of syllabus but for those interested, you can read up on latent heat and enthalpy of vaporization. Similarly, melting of ice also absorbs heat energy. From past year’s PSLE: Some buildings use a cooling mist system 2 lower the[…]

Solving rate questions

Maths tip: Some rate questions asks for combined rate. For these, first determine the rate, and then add them together. Example: "Lionel would take 8 days to build a wall. For the same wall, Nick would take 6 days. How many days would be needed to build the same wall if both of them worked[…]

Writing in the affirmative

English tip: Unless you are trying to emphasize the negative form of an idea, always write in the affirmative. When you write in the negative, you have to use an extra word and your readers need to spend extra effort to understand you. Examples: – not different: similar – not many: few – not remember:[…]

Writing concise English

English tip: When we write, it’s important to be concise. By removing redundant words, the essay flows better and once again proves to the examiner what a great writer you are. Here are some common redundant phrases: – completely finish – past history – each individual – terrible tragedy – true facts – absolutely certain[…]

Useful science tips

Science tip: Many schools have workshops for parents of P5 and P6 students. Here are two presentation slides that may be useful. http://www.rivervalepri.moe.edu.sg/wbn/slot/u1724/Dept/Science/P5n6%20Science%20parents%20workshop%202%201.pdf http://www.radinmaspri.moe.edu.sg/wbn/slot/u3201/Presentations/Answering%20Science%20Process%20Skills%20Questions%20(P5%20%26%20P6).pdf