A Palestinian family and an Israeli Bedouin father were among those killed on Saturday as the casualty toll from Israel's ground campaign and rocket attacks from Gaza continued to rise.
The Bedouin man died and family members were injured when a rocket hit their campsite in south Israel, police said.
The Palestinian family of eight were among several killed as the death toll in Gaza rose past 340, officials said.
UN chief Ban Ki-moon is heading to the region to help mediation efforts.
The visit is aimed at helping Israelis and Palestinians "end the violence and find a way forward", the UN said.
On Friday US President Barack Obama said he was "deeply concerned" about civilian losses in the conflict.
Israel launched ground operations in Gaza following 10 days of air strikes, which failed to stop Hamas firing rockets across the border.
The Bedouin man died and family members were injured when a rocket hit their campsite in south Israel, police said.
The Palestinian family of eight were among several killed as the death toll in Gaza rose past 340, officials said.
UN chief Ban Ki-moon is heading to the region to help mediation efforts.
The visit is aimed at helping Israelis and Palestinians "end the violence and find a way forward", the UN said.
On Friday US President Barack Obama said he was "deeply concerned" about civilian losses in the conflict.
Israel launched ground operations in Gaza following 10 days of air strikes, which failed to stop Hamas firing rockets across the border.
