Teacher vektor silhuet 8 months 5 Teacher vektor silhuet 8 months 3 Teacher with Desk vektor silhuet 11 months 8 Leader vektor silhuet 11 months 2 Speaker at podium vektor silhuet 11 months 5 Einstein vektor silhuet 12 months 3 Loud Speaker vektor silhuet about 1 year 4 Male Teacher vektor silhuet about 1 year 2 Professor vektor silhuet about 1 year 2 Woman Teacher vektor silhuet about 1 year 3 (Gwen) Office Lady is Making a Presentation vektor silhuet about 1 year 0 Teacher Man vektor silhuet about 1 year 2 Biology teacher vektor silhuet about 1 year 13 Medical Doctor is Presenting at the White Board vektor silhuet about 1 year 2 Microphone in Hand vektor silhuet about 1 year 0 Microphone Plugged into a Speaker vektor silhuet about 1 year 1 Speakers vektor silhuet about 1 year 0