There is a lot of talk today about the problems of nature and the environment protection, but only common work and awareness of each individual can alleviate the immediate consequences. For this reason awareness about this topic must begin as early as possible. Students mostly learn about nature and environment protection in Nature and Biology clasess. Detailed analysis of the curriculum gave an insight into the amount of the teaching content on the protection of nature and the environment and there was an online survey about the analysis of the National Teaching Curriculum of the subjects Nature and Biology. There were 103 participants in the survey. The participants were nature and biology teachers in elementary schools of Croatia. The results showed that the Curriculum does not contain enough topics related to nature and environment protection. After finishing elementary education, students only partially know about the nature and environment protection and do not achieve all the results attributed to curriculum. Participants think that they are not enough or are only partially educated to teach students about nature and environment protection. Most of the participants conduct classroom teaching with combined frontal and group work. For students to learn about nature and environment protection, teachers participate in many projects, they take students on field classes, they create an Eco Codex with them and also clean up school yards together.