This study was to Development of Collaborative Learning Plans on Historical Evidence to Develop Solving Skills Among Mathayom Suksa 2 Students, : The target group included 5 evaluators on the learning plans. The instruments used included 4 collaborative learning plans and 4 evaluation forms. The data were analyzed in terms of mean and standard deviation and presented the results in tables with explanation. The results included the 4 collaborative learning plans: (1) The tracks old town of Lanna pond, (2) The Historical Evidence river basin of Ping River – Kuang River, (3) The Inscription of Lanna, and (4) Local Wisdom of Lanna. Every plan was rated very appropriate (X= 2.91) in the aspects of learning standard setting, indicators, learning objectives, essential contents, learning substances, presenting desirable. characteristics to promote solving skills, learning media and resources, and measurement and evaluation.