For decades, cognitive scientists and psychologists have been studying how we learn. What they’ve discovered is that people can only hold a very limited amount of information in mind at the same time (Harvard psychologist George Miller dubbed this “the magic number seven”). If people are actively engaging those pieces of information, the number drops to perhaps two or three. So there is a case to be made for making learning materials easy to master.
On the other hand, researchers have also discovered that if learning is too easy for students, they can lose interest. Therefore, learning materials need to be in the sweet spot between easy enough to master and challenging enough to be interesting.
Keep this in mind when choosing books for your beginning reader. If you have a child just on the cusp of learning to read, take a look at Budding Reader books. Our books are in that sweet spot. Plus, each purchase triggers a donation of an ebook to a child in need, making our books even sweeter.