The study mainly investigates the students' attitudes toward mathematical learning and web-based mathematics competition in different learning stages. The subjects of this study were 276 students, including 206(74.6%) boys and 70(25.4%) girls. The collected data were analyzed by descriptive statistics, independent-samples t-test, one-way ANOVA, Scheffe' Method, and Pearson's product-moment correlation. Generally, there are four study findings: 1. There is no significant difference among selected variables. 2. There is significant difference between elementary school students and senior high school students in their positive, mathematical learning attitudes. 3. There are positive correlations among selected variables in different learning state go for the subjects. 4. The students showed responses to the web-based mathematics competition.