Determining the learning objectives clearly is to show the teacher's responsibility and commitment to the learners according to the published subject program. On the basis of specific goals, teachers easily design lessons to help students develop the necessary competencies. Based on Bloom's cognitive levels, we have proposed verbs as well as learning objective writing forms for teachers to refer to. From that applying for the specific lesson plan “Alcohol” belongs to high school chemistry program in Vietnam including: (1) objectives, (2) plan of teaching, (3) worked examples and (4) homework. The results of analyzing pedagogical experimental data on high school students show that designing teachers' teaching goals has a great influence on deciding the success of the lesson. Comparison before and after the impact of designing goals on learning outcomes of learners shows the feasibility of the study.

learning objective, Bloom’s verbs, SMART rule, teaching chemistry, plan of lesson, high school