Some links used for Year 4 by

BBC Mixtures <http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_6.shtml> & Separating Animation <http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_8.shtml>
Virtual Separations <http://www.harcourtschool.com/activity/mixture/mixture.html>
Quia-Separating Mixtures <http://www.quia.com/jg/33882.html>
Chem4Kids-Mixtures <http://chem4kids.com/files/matter_mixture.html>
Mixtures Around You <http://www.chem4kids.com/files/matter_mixtureex.html>
Solutions & Mixtures <http://chem4kids.com/files/matter_solution.html>
FossWeb-Mixtures & Solutions <http://www.fossweb.com/modules3-6/MixturesandSolutions/index.html>
Mixtures & Solutions List <http://www.princeton.edu/~pccm/outreach/scsp/mixturesandsolutions/toc_full.htm>
Separating Mixtures <http://www.mikecurtis.org.uk/mixtures.htm>
Mass Vs. Weight <http://mathforum.org/library/drmath/view/56334.html>
Measuring Matter <http://www.iit.edu/~smile/bi9204.html>
What is Matter <http://www.nyu.edu/pages/mathmol/textbook/whatismatter.html>
Matter & Mass <http://edtech.kennesaw.edu/web/matter.html>
Quia-Describing Matter <http://www.quia.com/jg/504943.html>