This article aims to improve the math learning process in students of rural schools. For this purpose, an educational serious game was developed for use on the web and mobile technologies. The tool was designed using a visual approach so that students reinforce their learning developed in class. The tool was tested and validated by thirty four students and four teachers of two rural schools in Apurímac-Perú. The test was given using a user usability questionnaire. The results of this research show a framework to design and implement Learning Objects and Serious Game to learn Fractions; in other hand, teachers and students agree that Math-Fraction allows them to teach and learn math in a fun way and different from the other traditional methodologies that they knew.