The moon looks a little different every day, but looks the same again about every four weeks. Water can be a liquid or a solid and can go back and forth from one form to the other. If water is turned into ice and then the ice is allowed to melt, the amount of water is the same as it was before freezing. Water left in an open container disappears, but water in a closed container does not disappear. Over an extended period of time, kindergarten students observe trees in their school yard.
Students extend their understanding of trees as a growing, changing, living part of their world.
During each season, the school yard trees are revisited and their twigs, leaves, flowers, and seeds are observed and compared to those from a previous season. Change is something that happens to many things. Animals and plants sometimes cause changes in their surroundings. Things can be done to materials to change some of their properties, but not all materials respond the same way to what is done to them. The way to change how something is moving is to give it a push or a pull.