There are a few learning materials of the fresh-water plants on the text book of the primary school science curriculum.
But, it is difficult to obtain these fresh-water plants as learning materials and it is rare use them in our daily life.
It is ea...
There are a few learning materials of the fresh-water plants on the text book of the primary school science curriculum.
But, it is difficult to obtain these fresh-water plants as learning materials and it is rare use them in our daily life.
It is easy to get the materials introduced in this thesis, and as they are eatable plants, it is useful to make use of them in learning materials of primary school science.
There materials are as follows:
Enteromorpha linza, Codium fragile, Porphyra tenera.