There is this Maths website which is good. There is videos for online learning as according to the MOE syllabus.
URL: http://www.matholia.com.sg/
For those who are teachers, this is free with a valid E-mail address. Otherwise, you can also register to try out the 7 days package to see if this is good. :)
•2B: Harmful climatic changes on the environment (haze)
•About Haze (http://www.haze.gov.sg/about-haze)
•2E: Health advisories during Haze management (for the elderly)
•http://www.youtube.com/watch?v=ScWUaHpTbk4 (Let it go parody)
•http://www.youtube.com/watch?v=BmUxmtoT05c (elderly with face masks)
•2G: Health advisories during Haze management (special conditions) lungs and heart sickness, flu, running nose, influenza)
•2F: Things to do during Haze management ( outdoor) **Outdoor, haze, activities, normal, pregnant, children, people with heart /lung diseases, elderly**