Development of Problem Based Learning Model Learning Devices to Teach Tube and Cone Topics

This article contains a scientific report on the process and results of developing learning tools to teach Tube and Cone topics at the junior high school level. The learning tools in question consist of a Learning Implementation Plan, Student Worksheets, Learning Media and Learning Outcomes Tests based on the Problem Based learning model. The development process is carried out according to the Kemp model (2011) which consists of 9 stages, namely Identification of Learning Problems, Analysis of Student Characteristics, Task Analysis, Formulating Learning Objectives, Sequencing and Introducing Content, Learning Strategies, Designing Messages, Development of Teaching Materials, and Development of Evaluation Instruments. The decision to get a well-developed learning tool was based on Nieveen's (1999) assessment criteria which included shutter validity, practicality and effectiveness. After passing through the 9 (nine) stages of development and 2 (two) rounds of validation and field trials, the researchers obtained data that was used to measure the achievement of the criteria given by Nieveen. The results of data analysis showed that the learning tools developed met the criteria of being valid, practical and effective, so they could be used to teach the topic of Tubes and Cones to class IX students.