By dividing the whole Taiwan into five regions (North 1, North 2, Central, South, and East), the regional preparation will guide teachers to understand the objectives of the teaching units, discuss teaching and learning activities, set the objectives of the teaching units and plan teaching and assessment, as well as understand teachers’ comments and suggestions on the mathematics reading materials and mathematics construction activities developed by the research team. It is expected that two sessions will be held in each of the two areas.