Two Palestinians were killed and four others injured when Israeli tank fire struck the northern Gaza Strip on Tuesday evening.
And one Palestinian was killed and two others injured in Israeli airstrikes on the Gaza Strip on the same day.
The attacks came hours after an Israeli army officer was wounded by a bomb on the Gaza Strip's northern border.
The Popular Front for the Liberation of Palestinian claimed responsibility for the bombing.
Hamas security officials said the bomb attack was carried out as Israeli troops were mounting an incursion into Gaza.
Four rockets were also fired from Gaza into southern Israel, but they caused no casualties or significant damage.
Gaza has been blockaded since 2007, a situation that has caused a decline in the standard of living, unprecedented levels of unemployment, and unrelenting poverty.
The apartheid regime of Israel denies about 1.7 million people in Gaza their basic rights, such as freedom of movement, jobs that pay proper wages, and adequate healthcare and education.