[June 12 (Wed) 5th graders of Kanamachi Elementary School experienced water quality survey of the river beside the new eight aqueduct of Edogawa riverbed! ]

[June 12 (Wed) 5th graders of Kanamachi Elementary School experienced water quality survey of the river beside the new eight aqueduct of Edogawa riverbed! ]
I put the water of the river in a cup and observed the smell and color, and I used the pack test to test whether the water was acidic or alkaline, and how much oxygen was dissolved in the water. I was surprised that the water of the river was unexpectedly beautiful and that the color of the medicine changed in the pack test, and I was engaged in classes happily!