Idea of Lecture Icon
It is a picture of podium. Only the top half is drawn with a small microphone. In the bottom half, instead of the podium, there are small circles indicating there is an audience. There are seven circles in total.
This is the Lecture icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.