The sample group of this study consists of
five experts selected by purposive sampling method. Data were analyzed by arithmetic mean and standard deviation. The
research findings are as follows: 1. The cooperative problem-based learning activities to enhance cooperation skill in online
environment consist of three steps are 1) the introduction to the lesson 2) the activities are subdivided in to three sub steps are 2.1
to introduced into a group activities 2.2 the cooperative problem-based learning activities to enhance cooperation skill in online
environment, and 2.3 evaluation and testing, and 3) The conclusion of lesson. 2. The experts agree that cooperative problembased
learning activities to enhance cooperation skill in online environment are the highest level of appropriateness.