There were times, before Israeli airstrikes on Gaza shattered the two-month-old cease-fire on March 18, when Huda Abu Teir and her family could almost believe things might go back to normal.

After fleeing from their home to a shelter for displaced people, and then to a tent, another shelter and on to another encampment during 15 months of war — six or seven displacements in all — they had returned to their house in Abasan al-Kabira, in southeastern Gaza, where they lived with Huda’s grandparents and uncles.

Back at home a few weeks ago, Huda, 19, threw a pizza party for her cousins, said one cousin, Fatma al-Shawwaf, 20. The other girls teased Huda: Shouldn’t you be studying? Huda, who was set on becoming a nurse, always seemed to be studying. But Huda laughingly retorted that she liked having fun, too.

The day before Israeli airstrikes resumed, Huda asked her Uncle Nour, who taught technology, if he could help her go over the material for her high school exams. He promised her a study session the next evening, he said.

But around midnight, Huda’s brother Abdullah, 15, heard an explosion. “What was that?” he screamed to his father, who had no time to answer before the next blast, this time over their heads and under their feet all at once.