1, find a delicate thin paper, such as writing paper or rice paper, a piece of tape paper, and four 40cm thin threads;
2. Cut a 40 cm square on the paper, fold it in half to find the midpoint, and then cut a small hole in the middle to keep falling smoothly;
3. Glue four lines with the same length to the four corners of the square with transparent tape, each line is longer than 30cm and has the same length;
Tie the other ends of the thread together and tie a knot so as not to separate. Then stick this knot on the weight with transparent tape;
5. Wrap the parachute loosely and throw it into the air. ...