溶解(中班科学)（Dissolved (intermediate Science)）.docVIP

溶解(中班科学)（Dissolved (intermediate Science)） Dissolved (intermediate Science) - kindergarten science teaching Stage: first, the purpose of teaching: learning to use experimental methods to understand the phenomenon of dissolved, know that some things in the water will dissolve, and some will not. Teaching difficulties: to help children understand and master the phenomenon of dissolution. Preparation: 1 number of containers and millet, beans, sand, sugar, monosodium glutamate, sugar powder. 2, warm water, small mouth cup, spoon, sugar, salt, orange, strawberry, milk powder and other beverage powder arrangement: 1 hours of teaching process; first, the introduction of the theme of the game. 1, play the game guest, the teacher to the identity of the host said: small guests please come in, please drink water.. 2, children taste sugar and salt water, guide children to talk about the taste of water. T: boy, is the water good? C: the water is sweet and nice to drink. C: teacher, my water is salty. Its not good to drink. T: why? Some children say that the water is sweet and some are salty C: because there is sugar in sweet water. T: wheres the sugar? C: Yes, wheres the sugar? C: the sugar is missing in the water. C: I know. Sugar dissolves. T: what about the salty water? C: its salt. C, the salt is gone. Its dissolved. T: the little boy said, sweet water and salty water with sugar and salt. Wheres the sugar and the salt? Is it dissolved? Now the teacher does an experiment. 3 teacher demonstration small experiment: sugar and salt disappeared. T: look, kid, the teacher puts the sugar in the water. Is the sugar in? C: Yes, the sugar is under the water C: how can the sugar be gone? C: theres a little sugar missing. Teacher, you shake C: stir with chopsticks, mom do sugar syrup to me, that is, stir with chopsticks T: Well, I use chopsticks to stir, see what changes. C: Oh, the sugar is getting smaller and smaller. C: the sugar is gone. T: wheres the sugar? C: no.. C; ran to the wat