The 20-month-old baby died of burns after a tear gas canister, fired to disperse the Palestinian protesters, fell into a house on Monday.
Three Palestinians, including 18-month-old Rama al-Shandi, were killed in Israeli attacks on Gaza City on the same day.
Meanwhile, a group of Israeli settlers set fire to a mosque in the Palestinian village of Orif in the West Bank. The mosque’s entrance door was burnt down in the arson attack.
At least 50 Palestinian protesters, who protested against the Israeli war on Gaza, were injured in the cities of al-Khalil, Ramallah, Qalandia, Beit Lahia, and East al-Quds (Jerusalem) on Sunday.
The Israeli military says it has attacked the Gaza Strip 1,350 times since the beginning of the new wave of airstrikes on November 14.
Over 95 Palestinians have been killed and more than 700 wounded in the attacks. Many of the wounded are in critical conditions.
Palestinian resistance fighters continue firing retaliatory rockets and missiles into Israel.