As you and your child may well be spending more time online at the moment, there is some helpful support information about internet safety and ensuring your child knows how to keep themselves safe at:
To support families during the school closure, they have also produced an information sheet for parents:
https://www.thinkuknow.co.uk/globalassets/professional/thinkuknow_primary_parents_helpsheet.pdf
And activity sheets for children:
https://www.thinkuknow.co.uk/parents/support-tools/home-activity-worksheets
There are also videos and further information on the site, all targeted to the appropriate age groups.
