Tourism activities in national park areas pose a challenge to be able to balance efforts to
protect and maintain ecosystems with efforts to utilize the area from the tourism sector …

Solid waste sometimes also comes from people who are active around riverbanks such as
trading, farming or other activities. Apart from these sources, the presence of waste in water …

Plastic waste floating in the waters can come from land or land activities. Plastic products
used in everyday life can be in the form of packaging products, household appliances …

In the scope of history learning, an approach is needed that strengthens students'
understanding of historical values. There are so many values and benefits that can be …