It is important that cyclists, whether or not they are undertaking a training course, maintain a level of competence. Both adult and child cyclists need to practise their skills at their own pace. If you are helping a child cyclist, it will help you to understand that control and observation skills are key to safe cycling. Many child cycle accidents are caused by lack of control (i.e. poor braking and steering).
Here are some suggested exercises that help develop and consolidate control. They should be done away from traffic in a safe environment.
If you are a parent who is also a cyclist, then you can set an example by always cycling correctly. Discuss possible hazards and ways in which your child might deal with them.