I know that I cannot use images from web pages. Where can I find images that are copyright free?

Yes it’s tempting at times to use images from web pages, but as you say quite rightly, you are breaching copyright by using them without permission. There are sites that promise free images but in my experience they aren’t very reliable. If in doubt though check the terms of use. See if your institution subscribes to SCRAN or the Education Image Galley. Access to these collections has been negotiated though JISC and you will need an ATHENS password to access them – see your learning resources team. TASI , funded by JISC, is the Technical Advisory Service for Images and provides lots of useful information on the use of images for learning & teaching. Below are a few links to some good sites for copyright free images, but conditions of use may still apply. Always check conditions before using images. Best of all, get your digital camera out and take your own!

Microsoft Clip Art has photographic images and hundreds of collections of clipart
Brisbio is an online image resource for learning, teaching and research in the biomedical fields
ARKive has images of life on earth
Think Vegetables has some great images of common and exotic vegetables
FreeFoto has a stock of photos that can be used for non-commercial work
FreeImages is good source of general pictures