1. Img 2758 Gregory Hartman

  2. Screen shot 2013 12 12 at 2.30.22 pm Duolingo Team Img 2758 Gregory Hartman

  3. Img 2758 Gregory Hartman

  4. Img 2758 Gregory Hartman

  5. Img 2758 Gregory Hartman

  6. Img 2758 Gregory Hartman

  7. Img 2758 Gregory Hartman

  8. Img 2758 Gregory Hartman

  9. Screen shot 2013 12 12 at 2.30.22 pm Duolingo Team Img 2758 Gregory Hartman

  10. Img 2758 Gregory Hartman

  11. Img 2758 Gregory Hartman

  12. Screen shot 2013 12 12 at 2.30.22 pm Duolingo Team Img 2758 Gregory Hartman