This BBC Bitesize page has a video explaining number bonds and two interactive games to play.
Save the Whale lets you learn bonds up to 10. Put the pipes together to make the number then turn the handle to release the whale. Note that this site contains adverts.
Hit the button has lots of options. Choose number bonds to practice bonds to 10 and 100.
Daily 10 lets you try out lots of mathematical skills. Choose the number bonds options to keep on learning these at home.
We have also been singing the song below in class to learn the bonds to 10.