Underlying Theories and frameworks Cognitivism Cognitivism is a theory that focuses on how learners process new information in the mind. The emphasis in this theory is on the internal mental process that takes place in learning and on mental structures. Cognitivism supports the idea that learners are actively engaged in cognitive processes such as thinking, memorizing, decisionmaking and problem-solving (Kurt, 2023). Quizlet application incorporates principles such as actively engaged learner and cognitive processes which are aligned with cognitivist theory. Quizlet application integrates in their design some learning strategies which are supported by cognitivists such as spaced repetition and active recall. Cognitivists promote using practices which include active recall of information. Cognitivists encourage learners to practice retrieving information from memory because they believe in the effectiveness of using active recall to strengthens the memory and understanding of new information, therefore, improves the learning process (Ertmer & Newby, 2013). Cognitivists support using the learning strategy spaced repetition. They believe that introducing intervals in the active recall of information can increase longterm memory. Spaced repetition happens when learners continually leave longer periods of time between each practice of active recall of information. Research shows that long-term retention improves when the delay interval between each occurrence of recall constantly increases (Hanson & Brown, 2019). Memory-based strategic model for vocabulary learning This model was introduced by Ma (2014), and it includes two equivalent processes for learning vocabulary, each one contains four stages. The upper process is the internal memory, and the lower process is the external behavior and thoughts. The first stage in the internal memory process is noticing the new word through visual or auditory input. The second stage is assessing the meaning of the new word by guessing or searching in the dictionary. the Third stage is recognizing the new word by making connections between the new word form and its meaning using repetition, imagery etc. The fourth stage is retrieving the word from the memory and using it in receptive or productive way which will support the long-term retention of this word with every use. The basic design of Quizlet application follows this model when in creating vocabulary and any other study sets. The first stage of the model is established in the Quizlet when the learner reads and listens to the new word on the flashcard. The second stage happens when the learner flips the flashcard and learns the meaning and form of the word. The third stage occurs when the learner plays the match and other games. The fourth stage is when the learner takes the test. Advantages and disadvantages of Quizlet There are many advantages and disadvantages of using Quizlet in learning and teaching which have been established in previous studies (Sari, Ftriani & Saputra, 2020; Sippel, 2022; Vu & Bui, 2023) as well as from personal use of the application. The advantages of using Quizlet include: 1- Easy to use: Quizlet provides a user-friendly interface and easy and quick access to practices through link or QR code using any device. 2- Motivation: Quizlet uses gamification to keep learners engaged. Learners enjoy the different activities, challenges, and competitions. 3- Usefulness: Quizlet is proven to be useful in vocabulary learning because it offers more understanding of the word through contextualization in the fill-in- the-blank tasks. Also, learners see Quizlet as a useful tool to monitor and selfregulate their learning when practicing at home. 4- Active and interactive learning: learners are actively engaged in individual activities as well as in the classroom activities. Quizlet live provides opportunities for learners to interact and cooperate with each other on group tasks. 5- Personalized learning: Quizlet monitors and adapts the difficulty of the (learn) mode based on the performance of the learner, it regulates the spaced repetition based on the pace of the learner, and it offers personalized recommendations for study sets based on the level and interest of the learner. 6- Easy to use and time saving for teachers: teachers only need to add their teaching material to make a study set and the application will do the tasks and tests for them which will save time for the teachers on the formative assessments. The Disadvantages of using Quizlet include: 1- Boredom caused by lack of flexibility: the free version of Quizlet is limited in types of exercises and includes the same background and music which can cause loss of interest and boredom when used repeatedly. 2- Dependence on Internet connection: even though some modes of Quizlet can be used without internet connection, Quizlet live which is used in the classroom depends on the internet connection and might not work properly leading to loss of motivation and engagement. 3- Complications in using Quizlet live for groups: this mode allows each member of the team to see only a few items from the study set on their device which aims to encourage students to collaborate and work together, but instead, it caused chaos and confusion in the classroom. Suggestions and Recommendations References Chaikovska, O., & Zbaravska, L. (2020). The efficiency of Quizlet-based EFL vocabulary learning in preparing undergraduates for state English exam. Advanced Education, 7(14), 84–90. https://doi.org/10.20535/2410-8286.197808 Ertmer, P. A., & Newby, T. J. (2013). Behaviorism, cognitivism, constructivism: Comparing critical features from an instructional design perspective. Performance improvement quarterly, 26(2), 43-71. Kurt, Dr. S. (2023, October 25). Cognitivism learning theory, strategies and examples. Educational Technology. https://educationaltechnology.net/cognitivism-learning-theory-strategies-andexamples/ Ma, Q. (2017). Technologies for teaching and learning L2 vocabulary. The handbook of technology and second language teaching and learning, 45-61. Sari, D. E., Ftriani, S. A., & Saputra, R. C. (2020). Active and interactive learning through Quizlet and Kahoot. Proceedings of the International Conference on Online and Blended Learning 2019 (ICOBL 2019). https://doi.org/10.2991/assehr.k.200521.025 Seibert Hanson, A. E., & Brown, C. M. (2019). Enhancing L2 learning through a mobile assisted spaced-repetition tool: An effective but bitter pill? Computer Assisted Language Learning, 33(1–2), 133–155. https://doi.org/10.1080/09588221.2018.1552975 Sippel, L. (2022). Quizlet. CALICO Journal, 39(3), 393-402. Vu, T. T., & Bui, D. B. (2023). Combination of photos, definitions, and fill-in-theblank tasks in Quizlet: A concern about learning academic vocabulary in online listening classes. Journal on English as a Foreign Language, 13(1), 102–126. https://doi.org/10.23971/jefl.v13i1.5239