A lot of the work that your child will bring home will be consolidation work; covering what has already been covered in class. Allowing your child to complete this work as independently as possible will bring a sense of accomplishment and will build confidence!
Do encourage your child to engage in activities which result in meaningful learning. When an older child has finished all their homework, if there is still 10 minutes left of their ‘homework time’, have them work on a project with a longer-term goal, for example reviewing notes from a previous topic and making colourful flashcards to be used at revision time. Alternatively encourage them to extend their learning in areas that interest them, through research (web-based or at the library) or by engaging in a creative project such as creating stories, presentations or even a short movie.