1. Place the hypotenuse of the red triangle horizontally at the bottom and put it on the desktop.
2. Place the hypotenuse of the natural triangle vertically on the left, on the left of the red triangle, and the vertex of the right angle is at the midpoint of the left right angle of the red triangle.
3. Place the hypotenuse of the yellow triangle horizontally on the upper side and fill it in the area sandwiched between the natural triangle and the red triangle on the upper left.
4. Place the hypotenuse of the pink triangle horizontally on the upper side, at the lower end of the right side of the red triangle, and the right-angled vertex is next to the right-angled vertex of the red triangle.
5. Fill the parallelogram in the area sandwiched by the red triangle and the pink triangle, as shown in the figure.
6. Place the square on the left side of the natural triangle and center it.
7. Place the hypotenuse of the green triangle vertically on the right and left of the square. This is how a sword is made.
Handwork can bring fine movements to children, that is, the unity and coordination of thinking consciousness and muscles. From rough manual to fine manual, children's hands-on ability can be improved step by step, and children can control their movements more accurately by doing manual work.
It is not only physiological function, but also physical activity is more important to people's comprehensive ability and mental health. Manual activities can cultivate children's observation ability, creativity and imagination. Children will gradually develop the habit of carefully observing things around them in the process of hands-on, and grasp the characteristics of things more and more accurately. Children's manual activities from imitation to creation are the process of continuous improvement of creativity.