This lecture aims to understand the basis of Islamic teachings. In the first half, you will learn the Islamic teachings along the "five practices and six beliefs of Islam" that Muslims practice and believe. In the second half, individual themes related to contemporary social problems such as women, science and halal will be discussed. The main subject of the lecture is Islam as a teaching, but the lecture will be delivered with showing the actual situation and problems of the modern world between Muslims and non-Muslims and comparing teaching and reality.