We like this a lot. I bought items for labs, but a notebook is enough, and narrating is a big plus for us. Kids love to tell you what they learn, and this is really nice tool.
My older son likes it and my toddler joins in too. There was one lesson that told us what t do if a bear attacks you (grizzly bear). Both my kids got to the floor and rolled up in a ball with hand behind necks. My two and half year old was doing this too it was rather cute.