Day by day the importance of artificial intelligence in career and everyday life increases. Therefore, we suggest four methodologies for primary and high schools, that introduces students to the concept of artificial intelligence. We present two methodologies for the primary schools, „Intelligent boxes“ and „Robot and emotions“, which are both unplugged activities. Furthermore, we propose two methodologies for the high school students, „How does computer learn - Teachable“, „How does computer learn - Quickdraw“. Three of these activities were used in practise on both primary and high school. Furthermore, we present results from our practices together with recommendations and criticisms of the applied methodologies.