This paper has proposed an interactive e-learning system
using recognition algorithms and augmented reality. The proposed e-learning system provides students with realistic audio-visual contents according to the recognition results. When the images in the textbook are identified by the image recognition, the audio contents are played and the visual contents such as graphics animation or movies are augmented on the captured images of web camera. For real-time interactive learning, the polka-dot or color-band markers are designed to indicate some objects in the textbook just like a mouse cursor. The proposed e-learning system has been applied to the public elementary school successfully. It is expected that the proposed e-leaning system becomes popular faster, when recognition errors are reduced and authoring tools are provided to produce the educational contents and scenarios.