When I first started my teaching degree, (about 7yrs ago now) one of the courses I did was based around science. In one of the classes we were told about the CSIRO’s website that had resources for children, parents and teachers. This is a great site, as it give you different activities you can do with your class, and it sends out emails if you sign up. Each email usually has an experiment you can do, and links to other science resources.
Another site that has Science, as well as all other areas of teaching, that is full of great links to resources is ‘Primary Resources‘. It is a site from the UK, but a lot of it is still relevant to our curriculum. Some of the links to the resources are out dated, so it can be a little annoying finding the ones that work.