AI Solves Bloom’s Two Sigma Problem

Bloom’s Two Sigma Problem, coined by educational psychologist Benjamin Bloom in 1984, refers to the challenge of finding methods of group instruction that are as effective as one-to-one tutoring. In one-to-one tutoring with mastery learning techniques, the average student performed two standard deviations better than students in a traditional classroom setting. However, due to time and cost constraints, one-to-one tutoring is often impractical. In this article, we will discuss how AI tools like ChatGPT, TeachMateAi, Speechify, and Bard can help address this problem.

The problem is that one-to-one tutoring is often impractical, expensive, and difficult to implement for large groups of students. Today, AI tools can help address this problem by providing personalised learning experiences, which can adapt to each learner’s pace, skill level, and areas of interest. AI tools are always available and can help an unlimited number of students at once, ensuring everyone gets the ride of their lives on the knowledge wave. AI tools can also provide immediate feedback, helping learners understand and correct their mistakes right away. AI tools are like a treasure trove of knowledge, trained on a vast array of educational content, which can generate explanations, examples, and answers on a multitude of topics. As its automated, AI tools can remove bias since they treat all learners equally, providing a level playing field.


ChatGPT, developed by OpenAI, is an AI language model that can engage in conversations, answer questions, and generate text. It can be used in the classroom to help students ask better questions, defend their arguments, and even incite discussions. By integrating ChatGPT into the learning process, educators can encourage critical thinking, promote technological literacy, and help students appreciate different arguments and perspectives.


TeachMateAi is a suite of AI-powered tools that generate personalised teaching resources and simplify various aspects of a teacher’s job. It can analyse content such as text, videos, audio, and websites to generate educational materials tailored to each student’s needs. This allows educators to provide more individualised learning experiences, potentially bridging the gap between traditional classroom instruction and one-to-one tutoring.


Speechify is a text-to-speech program that uses AI algorithms and machine learning to produce high-quality, natural-sounding voices. It can read various document formats, including PDFs, HTML, Microsoft Word Documents, and EPUB. By converting text into audio, Speechify allows students with different learning preferences and abilities to access information more easily and efficiently, helping them improve their reading skills or learn a second language.


Bard, an AI experiment by Google, is a creative and helpful collaborator that uses the Language Model for Dialogue Applications (LaMDA) to generate conversational responses. This AI tool can help users explore ideas, answer questions, and stimulate creativity. By integrating Bard into the learning process, students can engage in more interactive and dynamic discussions, enhancing their understanding of complex topics. In conclusion, AI tools like ChatGPT, TeachMateAi, Speechify, and Bard can offer innovative solutions to address Bloom’s Two Sigma Problem. By providing personalised learning experiences, promoting critical thinking, and offering alternative ways of accessing information, these tools can help bridge the gap between traditional classroom instruction and one-to-one tutoring, ultimately improving educational outcomes for students.

Leave a Reply

Your email address will not be published. Required fields are marked *