Development of plant physiology practical guide book with scientific approach for education

The main problem in the several high school in Padang is their Plant Physiology Lab Work Guide still made in cookery book type. This is affected to the less activity of student in the practice activity. The lab work guide with cookery book type is not optimal to develop students’ skill in science process. This research goals was to produce valid, practical, and effective plant physiology practical guide with scientific approach for university. The research use the Plomp’s development model that has 3 phases; the preliminary research, the prototype phase, and assessment phase. The data collection instruments are validator sheet of lab work guidance, practicalities of lecturer and student questionnaire, observation of student’s psychomotor and affective sheet and the test result of student study. The data were analysed with the description of the percentage results that was got on the field. The validation score is 81,20% with very valid category, the practicalities score 90% by lecturer with very practical category and 82,78 % by students with very practical category too. The conclusion of this research is the plant physiology lab work guide with scientific approach for university developed is valid practical, and effective.