English tip: This is a common sign we see at supermarkets. "10 items or less"— this is WRONG. Remember: -You use "less" when you are referring to things you are unable to count. -You use "fewer" when you can count the items individually. Examples: I want a cup of coffee with less sugar in it.[…]
Science tip: Friction is independent of the surface area! It may sound counter-intuitive, since increasing the contact area would create a larger source of frictional forces. However, it also reduces the pressure between the two surfaces for a given force holding them together. Since pressure equals force divided by the area of contact, it works[…]
Maths tip: For ratio problems where there are three groups of items with two ratios given – it is usually the case that you’ll need to express them into a common ratio. Here’s an example: "A fruit seller had some oranges, pears and mangoes. After selling some of them, there were 6 pears for every[…]
English tip: It’s Friday! Are you as happy as I am? In compositions, we often have to describe how happy our lead character is. Let’s think of different ways to do that, so that your essay can shine at PSLE. 🙂 Ways to describe happiness: She was jumping up and down with joy. Eyes gleamed[…]
Maths tip: Michelle had four times as many stickers as Vanessa. After each of them bought an equal number of stickers from the bookshop, Michelle had thrice as many stickers as Vanessa. If Vanessa had 57 stickers in the end how many stickers did each of them buy from the bookshop?
English tip: With PSLE just a couple of months away, it’s difficult to master the English language overnight. What we can do is to read more to boost our writing skills. On this very wet day, I thought it would be apt to single out some descriptions for rainy days that you can use during[…]
Maths tip: The figure below consists of two semi circles with diameter 12cm and a sector of a circle with radius 12cm. Find the area of the shaded part, rounding your answer to the nearest whole number. Answer will come in the comment box.
Science tip: Another question from a reader. This is a Crookes radiometer. It is not in syllabus but the student is expected to be able to infer from the description and diagram. ( https://en.wikipedia.org/wiki/Crookes_radiometer ) The answers are: (a) chemical energy (from inside the batteries) -> electrical energy (the electricity) -> light energy (from the[…]