I would like to encourage my grandchildren (ten of them, ages 5 to 17) to think about and discuss ideas. I started to compose an email (they are located in the U.S. Canada and Sweden) on the importance of the question "Why?". Among other things, I wanted them to be able to challenge, in a constructive way, the "wisdom" of their peers. I found that it was hard to do this in a way that would compel them to even think about my email! I also would like them to learn the value and the discipline of thinking, generally. Do you have suggestions (including literature) that would help in getting children to think and talk about ideas? I have found that this is very difficult - either because they find the process too much work or they don't want to embarrass themselves (or?). Any help would be appreciated. Thank you.