In this study, we investigate the most commonly used Finnish teacher guides for primary mathematics (Grades 1-6) in terms of their potential to support teaching mathematics and enhance teacher learning. We have analyzed the characteristics of teacher guides from two perspectives: 1) content and 2) form. The analysis was done in several iterative cycles. The teacher guides content are comprised of topics connected to educative aspects that support teachers at their work and potentially enhance teacher learning. Similarly, the form of the various Finnish teacher guides seems to follow the same pattern. Both the content and form of the teacher guides seem to be designed to facilitate the work of teachers by supporting the classroom practice with the design and the implementation of lessons. The findings are discussed in relation to the Finnish educational context, which influences both the way the guides are produced and their potential to enhance mathematics education.