There are a number of things you could try to help your child learn better.
Everyday activities can also be a source of learning. These obviously will vary according to the age of the child but could include the following:
What happened? Every time you ask what they have done at school and listen to what they say, you help them to communicate better.
Have they got the right equipment and books before going to school? Check that their homework is done.
Involve them in planning a family event, journey or holiday. Get them to show you how to use the internet. Read together. Use the football results or a trip to the shops to discuss numbers and words.
Ask them what they know and chat about their views. Help them to develop their ideas.