Leachate is  a liquid with an unpleasant odor and dark color that generally contains high organic and inorganic matter. High levels of organic and inorganic matter in leachate will potentially cause environmental pollution if not treated properly. One of the efforts that can be made to overcome these problems is with phytoremediation techniques. This study aims to determine the effectiveness of water bamboo (Equisetum hymale) as a phytoremediation agent  of Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) leachate of Jatibarang landfill. This study used experimental research with a one-factorial Complete Randomized Design (RAL) design with three treatments (P0 without water bamboo, P1 750 gr water bamboo, and P2 1000 gr water bamboo). Based on the results of research shows that water bamboo plants can reduce BOD and COD levels. The decrease in leachate BOD levels was caused by the phytoremediation process by water bamboo during the study, where the organic matter content in leachate would be degraded by microorganisms. Meanwhile, COD levels decreased due to the chemical oxidation reaction process and phytoremediation process that runs side by side. The effectiveness of reducing BOD levels most optimally occurred in treatment P2 on day 7 of treatment, which was 28.42%; while the percentage of effectiveness of reducing COD levels most optimally occurred in treatment P2 on day 7 of treatment, which was 39.14%

Learning while playing, playing while learning is the principle of fun learning in PAUD. Early age at school is an effective age for developing various potentials that children have. This research is motivated by a problem, namely the application of the principle of playing while learning is still not optimal in developing multiple intelligences in early childhood. This study aims to stimulate children's brains in the long term, so that their memories are always filled with activities that give positive impressions and of course are fun for children, and to find out the Early Childhood Education (PAUD) teacher's feelings about the concept of playing while learning for early childhood. The purpose of playing is basically directed at developing children's multiple intelligences. The principle of playing while learning prioritizes playing activities rather than learning, meaning that learning activities in PAUD are more dominated by fun and exciting activities for children. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do.

Learning while playing, playing while learning is the principle of fun learning in PAUD. Early age at school is an effective age for developing various potentials that children have. This research is motivated by a problem, namely the application of the principle of playing while learning is still not optimal in developing multiple intelligences in early childhood. This study aims to stimulate children's brains in the long term, so that their memories are always filled with activities that give positive impressions and of course are fun for children, and to find out the Early Childhood Education (PAUD) teacher's feelings about the concept of playing while learning for early childhood. The purpose of playing is basically directed at developing children's multiple intelligences. The principle of playing while learning prioritizes playing activities rather than learning, meaning that learning activities in PAUD are more dominated by fun and exciting activities for children. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do. The theoretical foundations in this study are: the concept of playing while learning, the notion of learning, the concept of PAUD learning, the concept of early childhood education. The approach method used in this study is a qualitative approach. The results of the study show that PAUD Dharma Bakti uses the method of playing while learning to increase the multiple intelligences of children. The conclusion of this study is that learning while playing is very effective to do.