Useful links

Science is Fun Home Experiment
http://scifun.chem.wisc.edu/homeexpts/homeexpts.html
 
Hong Kong Science Museum
http://www.lcsd.gov.hk/CE/Museum/Science/index.php
 
Hong Kong Space Museum
http://www.lcsd.gov.hk/CE/Museum/Space/e_index.htm
 
NASA
http://www.nasa.gov/
 
Science and You
http://www.c-science.com/index.htm
 
Scientific American中文版──《科學人》雜誌
http://sa.ylib.com/