The purpose of this study is to explore the effect of project on children's attitude toward environmental balance. This study is a qualitative study using a holistic single case study design involving "compost cases", at a kindergarten in Perak, Malaysia. The participants consisted of a focus group of 18 children and an educator. The data was obtained through triangulation results from unstructured interview, observation, and unofficial documents such as children notebooks, sketches, and pictures of investigative activities. The findings showed that the children understand the negative impact of using chemicals on Earth. The finding also showed that children able to give suggestions on producing compost, burying food scraps in the soil and use the compost dining set for banquet to deal with waste management problems. In addition, the finding showed that children able to classify waste materials which is easily decompose for compost production. The finding also showed that activities project able to develop entrepreneurial attitudes in children to sell the product produced. The valuable experience through observation and hands-on activities from early childhood will help the continuity of learning process throughout their lives.