Gale have been extraordinarily generous in providing all Australia schools with free extended access to their databases and e-books to support your efforts to provide on-line resources
To answer your question directly, Gale has a database that includes everything from virtual anatomy and dissections to an interactive periodic table, earth science & space science.
Please feel free to share this link with your science department and students free until at least the end of May:
Interactive Science Password gift
A great chance to trial these for free ! Looks so good….let me know what you think