This book was sheer magic with my 4 year olds. A little girl asks her dad to push her higher and higher on a swing, and she winds up going all the way into outer space. My students were giddy with how silly this was each time she went higher, and when she meets an alien kid in space who is also on a swing, well, that was the best part for them. We read it many times together, and this is one of those books I love because I read it to the kids and then they can immediately go and read it themselves. I have a video of a little boy in my class saying, "Higher! Higher!" and there is a good chance they were his first English words. Cutest part was his voice was exactly like mine.