This newspaper (reporter Liang Dan) "I guessed right so quickly, the bean bag is so smart!" "That's amazing, let's do it again!" Recently, in the 2025-year Beijing Primary and Secondary School Mathematics Festival with the theme of "Mathematical Creation in the AI Era", Qian Shouwang, a special mathematics teacher and director of the Curriculum Department of the Academy of Education and Science of Chaoyang District, Beijing, and the AI "teaching assistant" brought an interesting number guessing game class.

According to the rules of the game, the second-grade students of Ritan Elementary School randomly selected 88 from 0 to 0. "Is this number bigger than 0?" "Is this number smaller than 0?" "Is this number bigger than 0?" …… Through asking questions again and again, the bean bag quickly approached the correct answer.

"I guess the answer is 99, right?"

"Wow, that's right!" The children applauded excitedly for the bean buns. "Why is it so fast?" Thinking of the Q&A session just now when the AI selects numbers and the students ask questions to solve, they are about to double the time, and everyone can't help but sigh with anxiety and admiration.

"How can you guess right so quickly as you do?" The children ask questions to the bean buns.

"It's a question of using a dichotomy. The principle of dichotomy is that each guess narrows the range of the number by half, and by constantly narrowing the range to find the target number. Bean Bao replied.

After playing a few rounds of games for each other's "offense and defense", Qian Shouwang opened the answer record of the bean bag and analyzed it with the students: 88, 0, 0, 0, 0...... "The number asked by the bean bag every time is half of the remaining numbers, this is the dichotomy!" The students said.

Qian Shouwang also used the traditional method to teach the same teaching content - writing the selected numbers in a paper ball for students to guess, "but I always feel that the students' enthusiasm is not very high, not as engaged and engaged as in today's class." He calls this kind of learning with AI tools "crowdfunded" learning, "in such a classroom, AI is not only a playmate to attract the interest of younger students, but also can inspire children to think and explore from different perspectives."

In the classroom, mathematics teachers from primary and secondary schools in Beijing who came to observe and study crowded the front and back of the door and on both sides.

Li Li, a mathematics teacher at Chen Jinglun Middle School Dijing Branch, found that teachers' ability to control subject teaching determines whether AI is a "fancy display" or a "enlightenment and wisdom". In the face of the new challenges of the rapid development of AI technology, the key to making good use of AI by teachers may have to return to the "old answer" of teachers' basic skills.

Source: China Education Daily