What Do You Think About Self Guided Learning?

i didn't really get a chance to pick and choose, like the people whose learning style that i clicked with. Most college professors don't have any instructional training. I think you see these lecture halls where there are 400 udents being taught something, and they're just being spoken at. And that's not how people learn. So i guess i don't understand why that's a thing and why colleges are still doing that.