Practical: Videos for use of a microscope

Using:
http://www.youtube.com/watch?v=X-w98KA8UqU&list=FL-cFTJ8NxBjonnjuwSQgSsw&index=10&feature=plpp_video

Focusing:
http://www.youtube.com/watch?v=scEhgAiazzU&feature=autoplay&list=FL-cFTJ8NxBjonnjuwSQgSsw&lf=plpp_video&playnext=1

Wet mount:
http://www.youtube.com/watch?v=jjevU-XMVzU&list=FL-cFTJ8NxBjonnjuwSQgSsw&index=13&feature=plpp_video