Laboratory Activity Worksheet to Train High Order Thinking Skill of Student on Surface Chemistry Lecture

A worksheet has to be a set with activity which is help students to arrange their own experiments.For this reason, this research is focused on how to train students' higher order thinking skills in laboratory activity by developing laboratory activity worksheet on surface chemistry lecture.To ensure that the laboratory activity worksheet already contains aspects of the higher order thinking skill, it requires theoretical and empirical validation.From the data analysis results, it shows that the developed worksheet worth to use.The worksheet is worthy of theoretical and empirical feasibility.This conclusion is based on the findings: 1) Assessment from the validators about the theoretical feasibility aspects in the category is very feasible with an assessment range of 95.24% to 97.92%.2) students' higher thinking skill from N Gain values ranges from 0.50 (enough) to 1.00 (high) so it can be concluded that the laboratory activity worksheet on surface chemistry lecture is empirical in terms of worth.The empirical feasibility is supported by the responses of the students in very reasonable categories.It is expected that the laboratory activity worksheet on surface chemistry lecture can train students' high order thinking skills for students who program surface chemistry lecture.