By: Ade Sangadji

In the WWF office in Sentani, Jayapura Regency, there is a Learning Center facility. Here, school-age children can learn about the surrounding environment. One of them is by testing water quality. Just like Laurent, a fourth grade student of SD Kristen Permata Hati Sentani, who visited the Learning Center with his classmates.

They brought tumblers filled with drinking water from home. With great curiosity, Laurent himself tested the quality of drinking water at home. Using a loop or magnifying glass he saw that the drinking water was quite clear. After that he tried to test the PH of the water. "PH stands for the power of hydrogen, which is the acid-base level of a solution measured on a scale of 0 to 14. PH is the degree of acidity used to express the level of acidity or basicity possessed by a solution, in this case drinking water," explained Wanda, from the Earth Hour community who helped Laurent and his friends that day.

Kak Wanda gave Laurent red and blue litmus paper, not forgetting to also give the color indicator book so that Laurent and his friends can easily see the color change on litmus paper and match it with the color in the indicator book. Laurent poured the water in his tumbler into a measuring cup and began the test. "Kak Wanda, my drinking water is neutral, but it's also acidic," Laurent said while adjusting his panda lab hat. For more details, Kak Wanda gave him a digital PH meter so that the results would be more accurate. Laurent deftly tested his water with the PH meter. This time he smiled with satisfaction, "Sis, the PH is 7.0" he said with a smile.< br />

Not only that, Kak Tere invited Laurent to see the physicality of his drinking water through a digital microscope that was connected to the TV screen, Laurent also smiled when Kak Tere explained that Laurent's drinking water only contained water molecules, "Thank goodness drinking water is safe?" Laurent said happily. At the same time, Kak Tere took a sample of pool water and tested it with Laurent and his friends. Instantly they shuddered when they saw the display on the TV screen, water that looked clear but contained lots of bacteria and germs.< br />

In addition to testing water quality, Laurent and his friends also participated in virtual reality activities, story telling, trivia quiz to get to know endemic Papuan plants in the nursery garden. For those of you who live or happen to be in Jayapura, you can visit the Learning Center at the WWF Office on Jalan Pos 7, Sentani, Jayapura Regency, Papua Province./div>