1. Take orange and brown clay, knead it into a ball and knead it into the shape of an orange.

2. Take yellow mud, knead it into strips, knead it into the shape of bananas, and stick it together.

Clay is a kind of cohesive soil, which contains little sand, and water is not easy to pass through, so it has good plasticity. Generally speaking, clay is formed after silicate minerals are weathered on the earth's surface. Generally, it is weathered in situ, with large particles and composition close to the original stone, which is called primary clay or primary clay. This kind of clay is mainly composed of silica and alumina, which is white and fire-resistant, and is the main raw material for preparing porcelain clay.

The advantages of doing manual work:

1. Manual activities are a way for us to explore knowledge and promote brain development. The more we do, the more we can learn.

2. 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.

3. 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.