For a variety of historical, cultural, social, and/or economic reasons, adults may experience the need to continue their mathematics education in some form. In today's world, technology is playing an increasingly important role in educational situations, in the workplace, and at home. Technology plays a dual role in the teaching and learning of mathematics/numeracy for adults. Technology, electronic and otherwise, offers a medium to enhance learning in the form of tools such as rulers and compasses as well as software programs. However, these need to be made objects of learning in their own right before they can support higher level thinking. This book illustrates how electronic technologies offer new and improved levels of learning, especially in the field of mathematics.