Best way to help JC students is to let them practise past papers.
2016 JC prelim exam papers are available at:
Secondary school GCE 'O' level prelim papers cann be downloaded too.
Children from age 4 onwards can start to practise colouring and drawing or even learn about the alphabet and numbers, instead of just playing computer games.
Free Kindergarten & Preschool Worksheets, Printables
Topic by topic assessment worksheets are recompiled from top school exam papers. This helps the pupils to do the exercises at regular and gradual pace week by week.
Free Top Primary School Assessment Worksheet, Test papers, Download Now
Very often, when your child practises Top School Exam Papers, you have the answers from the answer key, but you find it difficult or have no time to explain how to derive the answer.
Why not try http://topschoolpapers.blogspot.com .