This textbook is founded on the idea of learning as knowledge construction and the implications of this for the nature of knowledge and for the way it is acquired. The first section examines the nature of knowledge from several perspectives. The dominant theme is that views of learning closely relate to views of knowledge. The second section considers what it is to be knowledgeable. Expertise and types of knowledge are considered using examples from different phases of education and subject areas. The final part of the book focuses on learning within domains and what this means from different subject perspectives. Learning and Knowledge is a Course Reader for The Open University course E836 Learning Curriculum and Assessment.