This is a fantastic free website for if the children want to visualise manipulatives without the mess.
Here on IXL, there are lots of interactive maths, english and science activities for you to try for all primary age groups.
There are some free phonics games on this website that we play in class on occasion: 'buried treasure,' 'dragon's den' and 'picnic on pluto.'
This is great for recognising numbers or adding more or less.
Paint the Squares - Interactive Number Charts
If you explore TopMarks, there are lots of maths as well as English games too.
On the Tate Modern Kids website, there are fun art activities to do at home as well as interactive ones.
BBC Bitesize has lots of learning, quizzes and games to play.
Primary resources, homework help and online games - BBC Bitesize
Oak National Academy has a vast array of lessons and work.