- To provide the students the opportunity to observe the effects of air.
- To demonstrate that objects fly only when the upward force of air (lift) is greater than the downward force (gravity).
- The students will construct a simple kite.
- To enhance group discussion skills.
- Paper bag
- Tissue paper or crepe paper streamers
Explain to the students that the Chinese invented the kite over 2000 years ago. Some people think the first kites were huge, man-carrying kites that lifted people high enough to see what their enemies were doing. Ask the students a question similar to the one following and wait for responses.
Question: "Why do you think people have been interested in flying kites for at least 2000 years?"
- "People wish they could fly kites."
- "People were interested in how things fly."
- "Flying kites is fun."
- "Kites teach you how things fly."
Decorate a paper bag.
- Glue four tissue or crape paper streamers (one on each bottom corner) to the bag.
- Punch holes in both sides near the open end of the bag.
- Attach a piece of string to form a loop .
- Attach a long piece of string to the loop, this will become the flying line.
- Take students to an outdoor play area and allow the students to fly their pre-kite.
- Allow the students to observe the pre-kite fill with air and float as they hold the string and run.
- Allow ample time for student experimentation.
Ask the students questions similar to the following:
- Why do you think some kites fly better than others?
- Why do you think kites fly better on some days than on other days?
Have students construct and fly pre-kites made out of different size and weights of paper bags. Compare and explain the differences.