With the increase of information security programs and curricula, a number of laboratory experiments or exercises, laboratory-based courseware or courses have been developed for information security education. While most of the existing laboratory exercises/experiments focus on security issues in a wired network, this paper describes a series of laboratory exercises we’ve developed for demonstrating wireless network attacks and defenses using common open source tools. These laboratory exercises demonstrate the following concepts or methods: wardriving, eavesdropping, WEP key cracking/decryption, Man in the Middle, ARP cache poisoning, MAC spoofing and defense techniques of some of the attacks.