Introduced are the basic ideas of interpolation and approximation theory through a combination of theory and exercises written for extramural education at the university level. Topics treated are spline methods, Lagrange interpolation, trigonometric approximation, Fourier series, and polynomial approximation. (MDH)

Swedish students in their final year of secondary school have decided not to write their required subject area essay on mathematics resulting from a lack of ideas and materials. Described are 47 elaborate suggestions by Swedish mathematicians for project work and the effort to sell the idea to Swedish teachers. (MDH)