Environmental learning at the elementary school level prioritizes thoroughness and accuracy in discussing topics. The deep learning approach is considered a solution to students' shallow understanding of the environment. One of the impacts is related to the topic of ecosystem and environmental diversity. The purpose of this study is to develop student worksheets with a deep learning approach on the topic of ecosystem and environmental diversity. The method used in this study is research and development (R&D) with the ADDIE development stage approach. The results of this study indicate that the developed worksheets have very valid categories (Score above 80%) and are therefore suitable for use in learning. As for the future, the developed worksheet products can be continued to the implementation and evaluation stages to measure the effectiveness of the developed worksheets.
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