Dear valued friend and supporter of onSponge, thank you for being our patron.
Owing to the COVID19 suspension of activities at the workplace mandated by MOH, onSponge will not be able to fulfill order deliveries between 7 April to 1 June 2020.
Orders made prior to this period have been dispatched by courier or allowed for collection at our pick up points.
Orders can be made during this period, but please note it will only be fulfilled from end June onwards.
Should you experience difficulties with your order(s) during this period, or for any other enquiry, please reach us at and we will respond to you.
Thank you and we look forward to resuming our service soon.

The +hinkingMath Handy Guide - Misconceptions Clarified (New!)


Solution / Answer Booklet

What type of solution booklet is required
  • Synopsis:

    Misconception due to misinterpretation or an inability to understand context often occurs and gives rise to errors when solving mathematical word problems, short-answer and even multiple-choice questions.

    This can be frustrating when you thought that your child has fully grasped all mathematical concepts and worked tirelessly through all materials to reinforce understanding and yet he could not get the questions right. Why is this so? And what can you do about it?

    This +hinkingMath Handy Guide, developed by the onSponge team, addresses the 10 most common misconceptions about word problems. Presented in an easy-to-understand format, it explains how each misconception arises and how students can avoid it. This guide aims at reinforcing the areas of improvement — with a study of the reasons and practice questions, it will help eliminate errors due to misconceptions and bring your child closer to that A/A*.

    Solutions are available for download online at