Number Sense is a six-part comprehensive module, with each part designed to build upon the previous one. In Numbers Part 1, students use number manipulatives to develop an intuitive understanding of how to compose and decompose numbers. In Numbers Part 2, students are introduced to place value, which forms the basis for more advanced mathematical concepts. 

Easy Add & Subtract, the third module, employs the use of the abacus to teach both number sense and the fundamentals of addition and subtraction, providing students with an intuitive and deep understanding of numbers.

As students progress through the remaining modules, they continue to expand their knowledge of numbers and mathematical concepts. Upon completing the final module, students will have a strong foundation in math that prepares them for the "Compete!" phase which requires them to answer quickly and accurately.