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A Simplilearn Certificate Goes on LinkedIn Each Minute; Here’s How Krishna Kumar Built It From a Blog

17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.

Class Central Team Jun 22, 2026

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有机化学实验


Master 有机化学实验基本技术和综合实验，从基础操作到化合物制备，培养实验创新能力和安全意识，为专业学习和研究打下坚实基础。
- XuetangX
- Self-Paced
- Free Online Course
概率论与数理统计


法国数学家拉普拉斯说“生活中最重要的问题，其中绝大多数在实质上只是概率的问题”。同学们，欢迎加入概率论与数理统计课程的学习，让我们一起探索这充满随机的世界吧!
- XuetangX
- Self-Paced
- Free Online Course
微生物学


Dive into the fundamental concepts of microbiology, covering cell structures, metabolism, genetics, and ecological roles of bacteria, fungi, and viruses, with practical applications in biotechnology.
- XuetangX
- Self-Paced
- Free Online Course
无机化学


Dive into comprehensive inorganic chemistry fundamentals, from atomic structure to chemical reactions, exploring both theoretical principles and practical applications of elements and compounds.
- XuetangX
- Self-Paced
- Free Online Course
遗传与分子生物学实验


掌握遗传学和分子生物学实验技术，从果蝇观察到PCR技术，通过实践操作学习DNA提取、细胞转染等基础实验方法，建立分子生物学研究思维。
- XuetangX
- Self-Paced
- Free Online Course
普通生物学


Discover the fundamental principles of life through comprehensive exploration of cell biology, genetics, evolution, and modern biotechnology, from molecular structures to complex biological systems.
- XuetangX
- Self-Paced
- Free Online Course
舌尖上的微生物


探索微生物在食品发酵中的奇妙作用，从酒类到发酵食品，了解这些微小生物如何创造出令人惊叹的美味，以及如何安全地驾驭它们的力量。
- XuetangX
- Self-Paced
- Free Online Course
营养与食品卫生学实验课


掌握食品营养与卫生检测的关键技术，包括维生素含量测定、食品质量检验和有害物质检测，培养规范的实验操作能力和数据分析技能。
- XuetangX
- Self-Paced
- Free Online Course
高分子化学


Discover the fundamentals of polymer chemistry, from synthesis mechanisms to industrial applications, exploring polymerization reactions, molecular structures, and material properties for advanced materials engineering.
- XuetangX
- Self-Paced
- Free Online Course
大学物理导学


本课程能帮助理工科大学生更好地掌握和运用大学物理知识。成为“见物知理”的热爱物理人！
- XuetangX
- Self-Paced
- Free Online Course
脑科学与认知


Explore the fascinating world of brain science and cognition, from neural fundamentals to cognitive computing, covering perception, memory, artificial brains, and neural networks for understanding human intelligence.
- XuetangX
- Self-Paced
- Free Online Course
仪器分析实验


Master 14种关键仪器分析方法，包括光谱、色谱、电化学和热分析技术。通过实践操作和虚拟实验，掌握分析仪器原理和操作技能，培养解决实际问题的能力。
- XuetangX
- Self-Paced
- Free Online Course
运筹学


Dive into operations research fundamentals, covering linear programming, network optimization, and dynamic planning with practical applications using Excel and OpenSolver for quantitative decision-making.
- XuetangX
- Self-Paced
- Free Online Course
医之大者：诺奖回溯与展望


走进本课程，邂逅医之大者，共享成长光芒，夯实未来医学之路。
- XuetangX
- Self-Paced
- Free Online Course
细胞与显微技术实验


Master essential cell biology techniques and microscopy skills through hands-on experiments, from fluorescence staining to chromosome preparation, tissue sectioning, and immunohistochemistry.
- XuetangX
- Self-Paced
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