I. Model essay 1

The experiment of observing mung beans began today. First, I prepared some mung beans and some wet cotton. I put mung beans on cotton and then cover them with a transparent container to keep the humidity. Next, I put the container in a warm place to provide a suitable growth environment.

On the first day, mung beans still looked dry and there was no change. But the next morning, I found that mung beans began to sprout! Their shells cracked, revealing tender green shoots. I am very excited because it means that mung beans are beginning to grow.

As time goes on, the sprouts of mung beans are getting longer and longer, and the colors are getting brighter and greener. I carefully observe their changes every day and record them in my observation diary. I noticed that the root of mung bean gradually became longer, while the top of bud gradually expanded into leaves.

By observing the growth process of mung beans, I learned a lot about plant growth. I understand that plants need water and sunshine to grow, and the growth rate is gradual, which requires patience.

Observing the experiment of mung bean makes me love nature more and cherish the miracle of life more. I hope to continue to carry out more observation experiments and explore the mysteries of nature in the future.

Second, the model essay 2

In the morning, I began to observe a mung bean. This kind of mung bean seed is small, smooth and light green. Its shape is round and flat, its surface is smooth, and there are no obvious lines. I put mung beans on a wet cotton yarn and gently cover another wet cotton yarn. Next, I put it in a warm and bright place to provide a suitable environment.

In the afternoon, I found that the appearance of mung beans changed. It absorbs water, becomes bigger, and its surface expands slightly. I can see the wet marks on the cotton yarn, indicating that mung beans are absorbing water.

The next morning, I continued to observe the situation of mung beans. To my surprise, I found that mung beans have been broken! A white seedling emerged from the middle and spread out. This is the root and stem of mung bean growth. The roots are thin and soft, and extend downward to find nutrients; The stem is light green, growing upward and sticking out small leaves.

On the third day, I observed that the growth rate of mung beans was amazing. The stems are getting longer and the leaves are getting bigger and bigger. These leaves are dark green, like green buds. I can clearly see that there is a tiny bud eye at the top of the stem, which is where mung beans will grow into soybean plants in the future.

With the increase of days, the stems of mung beans become thicker and thicker, and the leaves become thicker. I noticed some small depressions in the leaves, which are the distribution of veins. Leaves convert sunlight into energy and help plants grow through photosynthesis. On the last day of observation, I found that mung bean has grown into a small mung bean seedling.

By observing the growth process of mung beans, I deeply felt the magic of nature and the power of life. The growth of mung beans is a wonderful process, which makes me cherish and appreciate the beauty and diversity of nature more.

Three. Fan Wen 3

This week, the science teacher asked us to plant mung beans and observe their growth. As soon as I got home, I brought a watertight plate, covered it with paper towels, put some mung bean seeds on it, and finally, poured some water on it to observe its growth and development.

The next morning, the first thing I did when I got up was to go to the windowsill to see mung bean seeds. When I walked to the windowsill, I found a crack in the skin of mung bean seeds. In the afternoon, the crack became bigger and bigger, and finally the bud was pulled out. On the third day, all mung bean seeds germinated, long and short, thick and thin. What is more gratifying is that mung bean seeds have roots and are firmly tied to paper towels.

A few days later, I went to see that there were small leaves on mung bean seeds, which were as sharp as scissors. After a few days, the scissors grew very big, almost as big as the leaves. The new buds of mung bean seeds grew longer and longer, and finally became the stems of mung beans. I recorded everything I saw and reported it to the school teacher.

Unexpectedly, a small seed has such a strong vitality that we should learn from it.