This works because the children can do-hands-on experiences to do the research, information exchange from all over the world and collaboration between the students.  The teacher helps facilitate this to the students by providing the material and technology.  I liked that they had the opportunity to have the milkweed plants were the monarch butterfly leave their eggs. At my preschool, we would bring a plant inside the classroom where the students were able to see the caterpillar grow. We created a calendar to keep track of the caterpillar growth. We then saw the caterpillar start make its chrysalis, and finally, we were able to watch the monarch hatch from the chrysalis. Once the monarch was ready we took it out to the garden where we had more milkweed plants and let it fly.  It was a wonderful experience that the children were exposed too.  This activity can be done with any elementary age group.  After watching the video, I can see how I can expand this activity with other grades. I really enjoyed seeing the butterfly cards they received from Mexico.  I have recently seen a 9 minute video that is on YouTube: Visit El Rosario Monarch Butterfly Sanctuary in Mexico https://www.youtube.com/watch?v=xDqZdgtN28I  , I would use something like this to tie it into the curriculum.