I may not to say it but I mean it whenever I say it . thank you teacher for all extra efforts you make to help us grow and the challenges you encourage us to face to help us become who we are you are not only our teacher you are our friend authority and guid all rolled into one person we will always be grateful to you for your support and kindness. with kind regards

I love your vids.<br /> Keep it up Hank Green!!

thank u

Great job ! That was pretty hard

It was one of the best course I have ever taken. I really liked it, and I will continue to complete similar courses in the future.

GOOD

Nice classes

ya its a nice knowledge video . I got very much knowledge.

ya its a nice knowledge video . I got very much knowledge.

We appreciate you. Teachers don't just teach—they prepare us for the road ahead. ...<br /> Your sacrifices don't go unnoticed. ...<br /> You made this easy to understand. ...