1, making round cakes: First, prepare a round card paper, fold the paper into a semicircle, and then draw your favorite pattern or write words on one side of the paper. Then, unfold the paper and cut out the contents of the paper along the pattern or text just drawn. It will be in the shape of a round cake after cutting.

2. Make a circle: Similarly, prepare a circular card paper, fold the paper into a semicircle, and then draw your favorite pattern or write words on one side of the paper. Then, unfold the paper and cut out the contents of the paper along the pattern or text just drawn, but this time it doesn't need to be cut into the shape of a round cake, but into the shape of a ring.

3. Making balls: First, prepare a circular card paper, fold the paper into a semicircle, and then draw your favorite pattern or write words on one side of the paper. Then, unfold the paper, and cut the contents of the paper along the pattern or text just drawn, but this time it needs to be unfolded into a cone, and then the bottom of the cone is glued together to form a ball.

4. Make a round puzzle: first prepare a big round card paper, and then draw some small round patterns or write some words on the card paper. Next, cut out each small circular pattern or text, and then paste it on a new cardboard to make a circular puzzle.

Application of circle:

1, round clocks and watches: The clocks and watches we use in our daily life are generally round, because the circle is a perfect geometric shape and can be divided into equal parts. The round clock is convenient for us to tell the time and has a beautiful appearance.

2. Round dining table: When dining in a restaurant or family, the round dining table can be convenient for everyone to take meals and can accommodate more people. In addition, the round dining table also has a beautiful appearance, which can improve the comfort of dining.

3. Round coins: The coins used in most countries are round, because the circle is a perfect geometric shape, which is easy to carry and count. Round coins also have a beautiful appearance and can be appreciated as works of art.

4. Round wheel: The wheel is one of the indispensable parts of the vehicle, and it is usually designed in a round shape. This is because the circle has the characteristics of smooth rolling and small driving resistance, which can improve the driving efficiency of vehicles and reduce energy consumption.