2. I try to work together to make delicious soda.
Activity preparation: 1 puppet Fred, 1 bottle of soda, 3 slices of lemon,
some lemonade, some baking soda powder, cold boiled water, 1 spoon,
a kettle, some cups, some bowls and some chopsticks.
First, story introduction:
Teacher: One day, Fred (showing his teaching aid) was walking on the road. Suddenly I saw a bottle of soda on the side of the road (the teacher showed me the real soda) and thought: This must have been left by some tourist. Fred took a happy sip, ah! It's delicious. Fred happily told his good friend Paul (showing his teaching aid), and Paul took a sip. Wow! It's delicious, but they don't know what such a delicious soda is made of
second, the teacher shows the physical soda, so that children can guess the materials needed to make soda. And ask:
-They want to ask children for help. What do you think will be used to make soda? (water, lemon)
Third, the teacher summarizes the children's guesses and presents materials to introduce
lemon slices, lemonade, baking soda powder, cold boiled water, 1 spoon, kettle, 3 cups, 1 bowl and 1 chopstick. Ask the children to think about the making process together.
-teacher, there are so many materials here, so how to make soda now? (Young: soak the lemon slices in a cup)
Fourth, the teacher summarizes according to the children's answers, and explains the experimental operation process (showing PPT) and experimental operation rules.
Experimental operation process: 1. Soak lemon slices in hot water to make lemonade (the teacher shows lemonade)
Teacher: "As it takes a long time to make lemonade by soaking lemon slices, the teacher prepares lemonade in advance."
2. Pour a spoonful of baking soda powder into a cup filled with cold boiled water and stir it with chopsticks to make soda water (the teacher demonstrates the operation and shows the scooped baking soda powder to children for observation. One scoops baking soda and one stirs it)
3. Mix lemonade and soda water together (pour it into another empty glass)
And ask: What happens when lemonade and soda water are mixed together? Ask children to guess
the operating rules of the experiment: 1. Division of labor and cooperation, with two people in a group (one scoops baking soda powder and the other stirs it)
2. When taking materials, handle them gently, and don't scatter them everywhere
3. Keep quiet during the experiment
4. After using them, put them home and put them in order.
5. Children operate experiments independently, and teachers tour to guide them.
VI. Share the results of the experimental operation and make a summary by the teacher.
teacher: there are many bubbles when lemonade and soda water are mixed. Now we can make our own soda. Happy? Now let's invite the guests and teachers to taste with us!
VII. Ending part:
Invite guests and teachers to taste their homemade soda!