512x512pxclassroom teacher silhouette, monochrome education icon, instructor-led training presentation, black and white school logo, educational seminar graphic, academic instruction visual, learning environment illustration
587x800pxteacher lecture illustration, male educator cartoon, public speaking seminar, education science concept, classroom instruction visual, professional teaching aid, academic presentation graphic
512x512pxseminar presentation icon, academic conference symbol, lecturer silhouette, public relations sign, educational event graphic, professional development illustration, audience engagement visual
