Communication affects relationships in many ways in the work setting. For example with colleagues, the manager or supervisor and also the parents of the child and the child.
Effective communication is a two-way process. The person communicating has to send a clear and concise messsage to the responding party. The message must be understood correctly to have a response.
Communication can be in the way of telephone, written notes, email alerts, text messages and vocal. Communication is very important in the work setting.
Page 8 on of the collins handbook
will help you find out about why communication is needed with relatives, visitors and colleagues and how good or effective communication helps things happen, ineffective communication creates barriers if understanding isn't clear.
Or for further information you could use the coursework book that your tutor has recommended.
Hope this has helped alittle.