Growth Mindset

In the 7th grade science class I've been observing, the most obvious way the teacher promotes a growth mindset is by encouraging the students. Whenever she calls on a student who doesn't know the answer, she is always positive and never belittles them or anything. One thing I would do differently if I were her is her popsicle stick name drawing technique. I think it's a great strategy to call on students, but once she takes chooses one name, she takes it out and puts it into a bag. She keeps doing this until all of the kids have been called on, then empties the bag back into the jar. The problem I would expect to see from this (although I haven't actually seen it happen yet) is that once a kid is called on, there won't be any reason for them to pay attention, or try and work out the questions she asks the class because there isn't a possibility for them to get called on. I think it would work better if she put the names back into the jar, even if that's not totally fair to the kids that have been called on already, it would keep them all on their toes. I think that would encourage a growth mindset because that would encourage them to keep learning.
A really hands-on way the teacher encouraged a growth mindset was when they were dissecting a frog. She gave them instructions on what to do and what to look for, but once they finished that they were allowed to explore the frog however they wanted to. Initially, most of the kids weren't excited to do a dissection. They were all pretty grossed out. But, once they started getting into it, they really started to enjoy it, and were genuinely curious about what else they could find. It was a really low-stress situation for them to just explore the frog and ask whatever questions they wanted. It was really fun for them, and really fun for me to watch them!
One more thing I've noticed about this teacher: she frequently uses activities on the SmartBoard that are really only for one person, but the whole class helps out that student. For example, one of the activities was an online game where it would tell you which organ system this empty body needed. The student would then have to drag the right organs into the body. Only 1 student could do the game at a time, and I think only 2 students ended up doing it. But, the whole class was involved and encouraging the one student who was up at the board. It was fun for all of them to collaborate together like that.

This article talks about 4 simple strategies you can use to encourage a growth mindset in your classroom. I hadn't previously thought of collaboration of the students until I read this: https://www.edsurge.com/news/2014-10-24-4-ways-to-encourage-a-growth-mindset-in-the-classroom