Hey Omid zadi,
I really enjoyed reading your post! You made some great points about how the video can engage students. I agree that the video on its own does not force interaction, but using it with an activity could really help get students involved. I think having them pause the video to recognize tree characteristics is a great way to keep them engaged and thinking about what they are learning.
Your ideas for adding more interaction, like implanting questions or having students take photos and compare them, are awesome. Those changes would definitely make the content feel more hands-on.
The ways you have suggested for feedback, like quizzes, discussion forums, and photo submissions, all sound like great ways to make sure students get helpful feedback on their work.
Great job! It is clear you have thought a lot about how to make this more engaging for students.