Hey all, I am looking through some maths resources on here because to be quite frank i dont have time to re-invent the wheel for every lesson. Most of us dont. However most of the resources i am coming across end with the file extension of .flipchart I have never seen this before and i am therefore looking for a site and a free download that does not 'invade' my computer with viruses etc. Any help will be greatly received. Regards Mr N.