After knowing the length unit centimeter, you can let the child make the bean sprouts by themselves, observe the growth of the bean sprouts every day, and measure the length of the bean sprouts with a ruler, and the child will definitely like it. Attached are works by past students.
I'm here to loosen the soil and plant soybeans
Soybeans before and after soaking in water
The soybeans are nearly round before soaking in water, very hard, and the skin is very smooth;
After soaking in water, the skin begins to wrinkle slightly, and the soybeans gradually become larger and become oval.
The next day: Soybeans come out of a small "nose"
After drinking water for a day, the soybeans grew up, the outer skin became lighter and smoother, and the body was about twice as large as before, but it was not "strong" on the first day. If you look closely, you'll see that it's grown a cute little "nose."
On the third day: the "nose" began to grow
In just one day, the "nose" grew into a "small hook", and the "hook" was about 23 mm long, white and curved, which was really pleasing.
Day 4: The soybean nose begins to change color
The soybean "nose" is growing fast, and some of the colors have begun to turn green, perhaps too happy, and lo and behold, its "mouth" is smiling.
Day 8: Amazing changes
May Day out of 5 days after coming back, I can't believe it, that little dot has grown a lot taller, with a ruler to measure, wow, 28 cm, fantastic!
There are not many leaves in a soybean, there are not two oval dark green leaves near the root, and there are no leaves for a long time, and the leaves at the top are large heart-shaped green leaves; the stem of the soybean is very thin, a little weak and not alarming, and the bottom grows a slender and long root, which can be deeply inserted into the soil and absorb nutrients.