In the trend of innovating teaching methods in the direction of developing learners' competencies in high schools, active teaching encourages students to actively learn to form their own qualities, general and specific competencies. History 11 is a subject that provides students with general knowledge about Latter-day world History, Modern World History (1917 - 1945), Vietnam History (1858 - 1918). To help students form historical knowledge applying competence, teaching methods that stimulate students to learn actively are encouraged to be applied in teaching History 11 in high schools. However, the situation of teaching with one-way knowledge transfer, with little focus on training historical knowledge applying competence, still exists. Therefore, students are still passively absorbing one-way knowledge, memorizing facts, and their historical knowledge applying competence is still limited. The article analyzes fundamental theories of active teaching in History 11 and results of applying active learning methods in training the competence of applying historical knowledge and skills for students at Tam Phu high school, Thu Duc City.