In this paper, one low achiever’s, Maya’s, mathematical thinking is reported. Mathematical thinking is studied through problem solving and view of mathematics. The results indicate that Maya has severe gaps in mathematical knowledge and problem solving. Furthermore, affect hinders her learning and activities in mathematics. Despite the challenges, Maya wants to learn mathematics and succeeds in giving an answer to every mathematical problem in the study. In addition to further support in mathematics and affect, she could benefit from learning to use different representations in mathematics and picturing the tasks in real life.