This book is our new proposal in Mathematics aimed at the complete preparation of 6th-grade students for their admission to Model High Schools. For this reason, we have included the most important teaching units with detailed theory and a plethora of exercises, so that students can practice on various exam topics.

More specifically, the book includes:
- numbers (natural, decimal, fractions) and their operations,
- the concept of the unknown and equations,
- ratios and proportions,
- the usefulness of Statistics through the process of data collection and processing,
- numerical, geometric, and composite patterns,
- basic geometric shapes, planes, and solids, their areas and volumes, symmetries.

At the end of the book, you will find past exam topics for Model High Schools from 2013-2019 with their solutions, as well as all the solutions to the exercises, problems, activities of each subunit, and the review criteria.