Book excerpt: This box set lets kids learn at their own pace through interactive learning and vetted information from the beloved Smithsonian Institution. Perfect for children aged 6-10 6 Books - 60-pages each - Books included: Great Americans​, American Experience, Animals, Space, Air, and Natural History 1 Electronic Interactive Reader - Touch the Reader to photographs, word definitions, and other locations on the page to hear audio and play games. There are over 3,000 audio touch points and approximately 17 hours of audio.