The ability to use technology in the era of the Industrial Revolution 4.0 is something everyone should have. Likewise in the field of education, teachers and students can use technology as part of the media used during the learning process. Learning by utilizing technology as learning media is expected to give a pleasant, challenging, and interactive impression that contributes to the abilities of elementary school students. One of the abilities of elementary school students that are expected to develop is critical thinking skills. Critical thinking skills are the ability to observe, analyze, and evaluate previously acquired knowledge based on logical reasoning. Critical thinking skills can be developed with the help of learning media. One of the technology-based learning media that can be used is Quizizz. Quizizz is a web tool or smartphone-based application that can create interactive quizzes in the form of games used in the learning process both in and/or outside the class or in distance learning. Therefore, Quizizz is expected to contribute to the development of students’ critical thinking skills in elementary schools, especially in science learning.
Mathematical communication skills of college students can diverse depending on the learning model applied. The peer teaching model and CTL are alternative models that can be applied to improve mathematical communication skills. The difference in ability can not only be seen from the selection of the model but also gender. Gender is one of the factors that can be used as a benchmark in determining mathematical communication skills. This study aims to see there are differences in mathematical communication skills between male and female college students and whether or not there is an interaction between learning models and gender on college students' mathematical communication skills. The results showed that there were differences in mathematical communication skills between male and female students and there was not interaction between learning models and gender on college students' mathematical communication skills. Male college students are better able to communicate mathematical in written form in written text and mathematical expressions while female college students are better able to communicate in drawings.
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