I teach a number of young children, including my 7 year old son and 10 year old daughter. The most important thing about teaching children and introducing them to golf is to let them learn at their own pace and don't expect them to understand all the complex moves and shakes required to make a 'proper' golf swing.
Secondly, be VERY careful with golf clubs. I don't advise cutting mens or ladies clubs down ... the heads are WAY too heavy for them. It will be like one of us swinging a broomstick with a bucket filled with concrete. Rather buy them the correct equipment which has been fitted with junior shafts and weighted correctly. Proper golf equipment is not expensive and can be bought from the local golf shop or line at places like
www.golfoundry.com
Thirdly, lessons should be 15-20 minutes, no longer. Children have very short attention spans. The lessons should be focussed on 1 thing at a time and kept to the basics of the grip, alignment etc.
You might be interesting to get the 'par' for the the various age groups. If you want me to send you them to you, please e-mail me.