The course of making bookmarks in 24 solar terms is as follows:

1. Preparation materials: cardboard, scissors, glue, colored pens, etc. Choose a favorite 24 solar terms, such as the vernal equinox, and draw a beautiful vernal equinox pattern on the cardboard, which can be decorated with flowers, leaves, butterflies and other elements, and pay attention to keeping the picture harmonious and beautiful. Cut the pattern with scissors, then apply glue on the back of the pattern and stick it on the bookmark.

2. Write the name and date of the corresponding solar term on the bookmark, which can be filled in with colored pen or marker, and the font should be neat and clear. Finally, you can add some small decorations to the bookmark, such as pasting a small butterfly or flower, to make the bookmark more vivid and lovely. 24 solar terms bookmarks can be made according to your own preferences and creativity, and different solar terms can make different bookmarks.

24 solar terms's relevant knowledge is as follows:

1. 24 solar terms is a calendar system with a long history and rich cultural connotation formed in China's ancient agricultural activities. Their origins can be traced back to the Spring and Autumn Period and the Warring States Period. At that time, in order to meet the needs of agricultural production, people formulated the 24 solar terms according to the positions of the sun and the moon and the laws of weather changes.

2. The formulation of 24 solar terms comprehensively considered the running laws of the sun, the moon and the earth, as well as the climate characteristics and crop growth in different regions. Each solar term has its specific name and meaning, such as vernal equinox, autumnal equinox, summer solstice, winter solstice, etc. They reflect the climate characteristics and agricultural activities in different seasons. In the long-term practice, 24 solar terms has been gradually accepted and applied by people.

3. People arrange farming activities according to solar terms, predict weather changes and guide agricultural production. At the same time, 24 solar terms has become an important part of China's traditional culture, which is widely used in literature, art, philosophy and other fields. The naming and order of 24 solar terms have their specific meanings and laws.

4. Among them, beginning of spring, long summer, beginning of autumn and beginning of winter are the beginning of the four seasons, and the vernal equinox, autumnal equinox, summer solstice and winter solstice are the nodes that divide the day and night equally. Rainwater, Grain Rain, light snow and heavy snow are the signs of precipitation, and startled, clear, full and mang seeds are the reflection of phenological phenomena. These solar terms are formulated according to the change of the position of the sun.