The military didn't immediately retaliate for today's attacks, which came on the last day of the Passover holiday. No casualties were reported.
The military says the latest bout of attacks started late yesterday when an explosive device went off targeting troops along the border. A missile was fired at the soldiers on Monday and at least seven rockets into southern Israel after that.
Fire from Gaza, ruled by the militant Islamic group Hamas, has declined since an Israeli campaign aimed at ending what were then almost daily attacks in 2012, but it still persists.