In this case study, it was examined the nature of mother’s maths talk in the conversations with their children and the changes in mothers’ maths talk in case of enriching the home maths environment through home based training activities. The naturalistic interactions between seven mothers and their preschool-aged children were recorded two times before and after the eight-week training activities. Training activities included the discussion sessions about children’s maths development in early years and mothers’ conducting maths activities with children in daily life. Findings from this research reveal that mothers’ conversations with their children contain many words related to various mathematical skills. The research has also shown that some kinds of activities such as puzzle and cooking support the probability of emerging maths talk. Moreover, it was found that the amount and quality of mother’s talk about mathematical concepts and skills increased after the home visits including training activities.