Aim: This study aimed to investigate the effect of using Wordwall on academic achievement and motivation towards learning mathematics among sixth grade students in the Nablus District. Methodology: this study used the experimental method with a semi experimental design, and the study was applied to a sample of 46 female students from the sixth grade at Sarra Secondary School for Girls. They were divided equally into two groups: control and experimental. The algebra unit was taught to the students of the experimental group using Wordwall. The researcher used a pre-test to verify the equivalence of the two study groups, a scale to measure students’ motivation towards learning mathematics, a test to measure students’ achievement in the algebra unit, and the training material according to the Wordwall platform. Results: The results revealed that there is a statistically significant difference at the significance level (α=0.05) between the average scores of sixth grade female students in the post-achievement test between the experimental group and the control group in favor of the experimental group. Moreover, there is a statistically significant difference at the significance level (α=0.05) between the average scores of sixth grade female students in the motivation scale towards learning mathematics between the experimental group and the control group in favor of the experimental group. Conclusions: The results of this study showed that there is a positive effect of using the Wordwall platform in developing academic achievement and increasing the motivation of sixth grade students towards learning mathematics. Recommendations: Using the Wordwalll platform in teaching various mathematics subjects for all educational levels, as it has a positive impact on developing academic achievement and increasing students motivation to learn mathematics, as well as using the Wordwall platform in teaching other subjects.