Rujukan

Lee Tak Sing, Lean Kee Fang & Azizah Tengah. (2003). Mathematics Year 2 Tex Book Part 2. Kuala Lumpur. Dewan Bahasa dan Pustaka. (7 Oktober 2010)



Youtube. (2007). Child Conservation. [Online]. [Available]:http://www.youtube.com/watch?v=qYtNhNP69lk ( 16 Oktober 2010 )


.Youtube. (2010). What is volume? K2 Math Education Kids educational Video.[Online]. [Available]:http://www.youtube.com/watch?v=VASC2aeehWc&feature=related (16 Oktober 2010).