The mathematics content for each grade level is presented in one book containing eight thematic modules that connect the mathematical ideas to real-world applications. Each module has four to six sections. A section contains one to three explorations and requires one to three days to complete. There are one to three explorations per section. Each exploration takes one day to complete. Each section contains key concepts. These key concepts give the main ideas and the new terms for the section. Practice and application exercises are the homework assigned at the end of each exploration. The practice and application exercises, spiral review, and extension reinforce and extend learning. The extra skill practice provides additional exercises for students who need more practice.