Challenge Based Learning is a new teaching model that combines important aspects such as problem based learning, project-based learning and contextual learning that focuses on real issues in the world. The syntax includes; Big Idea, Essential Question, The Challenge, Guiding Question, Guiding Activities, Guiding Resources, Solution, Assessment and Publishing. Sodikin's research results prove that Challenge Based Learning can improve student's learning achievement. But have the lack of the steps of practicum is not directional because the lab has not seen the side of concepts and methods.Diagram vee is a tool to build the structure of science that connects between the development of science or invention with the concept and ideas of the theory leads to the question, and has a side conceptual and methodological side. Both sides actively interact with each other during the use of focus or research questions. Lu'luin Nur Hasanah's research results proved to improve the quality of the process and student learning outcomes. Excess Diagram vee that is more directed practical steps because practicum always see the side of concepts and methods and minimize the possibility of errors in the taking of records. CBL learning model with diagram vee is a model developed to guide students in finding the concept independently by applying the Challenge Based Leaning model syntax with the accompanying Diagram veedengan complementary advantages and disadvantages. The subject matter of Environment is obtained from the analysis of the need for the result of UN 2012/2013 that the result of UN MA Negeri 1 Kota Bengkulu is 62.03. Through Challenge Based Leaning based model with Diagram vee it is expected that students can empower the students 'interpretation and students' caring attitude. CBB-based model accompanied by Diagram vee is expected to be applied in the learning process can primarily improve the ability of interpretation and students' caring attitude. CBL model with Diagram Vee should be done with Research Research and Develompment the development of CBL-based module with Diagram Vee.