The purpose of this study was to compare children's environmental awareness and attitudes in the classes where TEMA Kids was implemented and where it was not. This study which used pre-test post-test control group quasi-experimental research design was carried out in 2016-2017 academic year. The study group was composed of 60-72 month old 138 children (69 experimental, 69 control) who continued their preschool education. Environmental awareness and attitude scale for preschool education children was used as data collection tool. The t-test for dependent and independent samples was used to compare children's environmental awareness and attitudes in experimental and control groups. When the findings were examined, it was identified that when compared to the control group, there is a significant difference in favour of children in the classes where TEMA Kids program was implemented in all sub-dimension and total scores of the scale except for the environmental attitude sub-scale protecting creatures sub-dimension.