A glass of water at a temperature of 0 degrees Celsius was placed in the freezer. after a while

A glass of water at a temperature of 0 degrees Celsius was placed in the freezer. after a while, half of the water froze and turned into ice, but neither glass, nor ice, nor water changed the temperature, 0 degrees Celsius. Did the water absorb or give off heat, which turned into ice?

In order for water to freeze and turn into ice, it is necessary to “take away” heat from it, since the process of transition of water into a solid state is possible only under such conditions. The temperature of the ice, glass and water did not change, this is due to the fact that although the water gave off heat when freezing, the entire volume of water has not yet completely turned into ice. The answer was that the water turned into ice gave off heat.