References:

References:

1. Rabiatol Adawiyah Binti Hashim,Yap Poh Moi,Cho Kin Tong,Tan Kim Pee ( 2003 ).Mathematics Year 2:Textbook Part 2.Multi Media Synergy Corporation Berhad.Selangor.
2. Rabiatol Adawiyah Binti Hashim,Yap Poh Moi,Cho Kin Tong,Tan Kim Pee ( 2003 ).Mathematics Year 2:Activity Book Part 2.Multi Media Synergy Corporation Berhad.Selangor.
3. Chua Suet Kam.( 2004 ).Notes And Questions Mathematics Year 2.Pustaka Sistem Pelajaran Sdn.Bhd.Kuala Lumpur.

Websites:

• http://www.youtube.com/watch?v=ih-Jny73DUg
• http://www.youtube.com/watch?v=VASC2aeehWc
• http://www.youtube.com/watch?v=a0PqlVHq5ew&feature=related