Invention of the "Eye to Scale" Unit! (5 volumes) / Shigekatsu INABA

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Children's Books
[Introduction to the Contents]
In ancient times, mankind lived a life of rising with the sun in the sky, falling down and sleeping.
It is believed that the first thing that mankind measured at that time was "time."
As the moon became round and narrow in the night sky, they measured time.
As the amount of harvest increased, they measured "volume" and "weight."
In this way, mankind invented various units according to their needs.
『 : Invention of the "Eye to Scale" Unit! 』 published five volumes in total.
This series explains the various units that we use everyday today in cartoons, illustrations, photos, etc. in an easy-to-understand way.
This series is useful for understanding elementary school arithmetic unit "Unit and Measurement".
(1) Various units
(2) units of length, angle, and speed
(3) units of area
(4) units of area
(5) units of weight.