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AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.
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AI Engineering
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Arab-Islamic History: From Tribes to Empires
ODS en la Agenda 2030 de las Naciones Unidas:Â Retos de los Objetivos de Desarrollo Sostenible
Understanding Dementia
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XuetangX is an open online learning platform for Chinese students. It offers massive courses in multiple disciplines, with a mission to build an affordable, quality learning environment for everyone.
Explores acupuncture and moxibustion through meridian theory, acupoint location, needling and moxibustion techniques, and clinical application in English.
Study common ear, nose, throat, laryngeal, and neck diseases through their anatomy, causes, diagnosis, treatment, and prevention.
In this course, learners will be able to study the concept, knowledge system, application field, technical principle and typical technical architecture of blockchain systematically and comprehensively.
Learn the theory, core manipulations, and clinical application of Chinese Tuina for common orthopedic conditions through clear explanations and demonstrations.
Learn to organize, query, index, and manage spatial data through relational and spatial database concepts, Oracle Spatial practice, and GIS exercises.
Build a foundation in AI algorithms: linear regression, decision trees, CNNs and RNNs, transformers and diffusion models, prompt learning, RLHF, AI agents, and ethical issues.
Builds inorganic chemistry foundations by connecting material structure, chemical reactions, element chemistry, and practical experiments to analysis and calculations.
Explore how energy quantization, probability, orbitals, and molecular spectra reveal chemical substances, structures, and changes microscopically.
A humanistic introduction to mathematics that uses number systems, vectors, geometric shapes, and functions to strengthen reasoning rather than emphasize calculation.
Explores how biomolecules, metabolism, gene expression, and DNA repair explain energy use, inheritance, and disease.
This course is divided into 7 chapters: Characters in Chang’an Buddhism, Buddhist temples, schools, classics, literature, art.
Analyze continuous and discrete signals and systems using convolution, Fourier, Laplace, and z-transforms, with sampling and system response.
Introduces analytical chemistry through sampling, quality control, titrimetric methods, gravimetry, and spectrophotometry.
A global introduction to ecology spanning organismal, population, community, and ecosystem levels, linking foundational principles to sustainable development.
Learn how to inspect, quarantine, and regulate meat, milk, eggs, and other animal-derived foods to prevent contamination and protect public health.
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