Learners · don't ask
01 · First, why we built it.1
GAO FANG01 / 06
Students don't ask, teachers can't see2
We solve one problem for two groups: learners and teachers.
NetEase Youdao's learning data on 100M+ users shows:5
9%
Only 9 in 100 students ever asked a question.6
2024–2025 · China University MOOC
& NetEase Cloud Classroom
So questions go unanswered, and never become data.7
Teachers · can't see
Teachers get no feedback, so they can't see where students are lost.4
02 · Next, what Lectiva does for students.1
GAO FANG02 / 06
For Students
Every question gets a sourced answer2
Read
Lecture 6 · Recursion and Dictionaries▶05:10 · 48 min
02:08 · What recursion is: divide and conquer with base cases
05:10…avoid infinite recursion by ensuring that we have at least one or more base cases that are easy to solve.
Ask about thisLecture 6 · 05:10
05:25 · Iterative vs recursive multiplication
08:37…until I get down to something I can solve directly, a base case.
To read, the lecture becomes text that moves with the video.3
Ask
Lecture 6 · 05:10“…at least one or more base cases that are easy to solve.”
Why do we need a base case?
AI explanation · based on the lectureLecture 6 · 05:10
Each recursive step makes the problem smaller. The base case is solved directly, so the calls stop instead of running forever.
Slide quoteLecture 6 · Lecture 6 slides, p. 9
“base case: keep reducing problem until reach a simple case that can be solved directly”
Answered by Claude Opus 5.5 · AI can be wrong — check the sources.
Ask my teacherPractice⧉
To ask, they pick any line, in English or Chinese. Every part of the answer shows its source.4
Review
Notes & highlights · Lecture 6
“…one or more base cases that are easy to solve.”05:10
base case: solved directlyp. 9
My questions · Teacher replied1
Only visible to you.
To review, they keep notes, or ask the teacher without their name.5
03 · Then, what it does for teachers.1
GAO FANG03 / 06
For Teachers
Turn confusion into proof for planning2
General AI
General AI just says, “Add more examples.”3
It has no data from this class.4
vs
Illustrative
Class debrief · Lecture 6Student confusion · from anonymous questions
Stuck on: base case: when does recursion stop?11students
From your slides: Lecture 6, pp. 9–10
No question text · no namesAdd to course adjustmentsDismiss
Not in your slidesPython's recursion limit4 students
Chapters · where students asked
117
00:0002:0805:2509:1614:3017:1020:1424:3728:5833:2739:1140:4746:08
Students askedMost confusionIllustrative · no real class data on the demo course
But after class, Lectiva's class debrief shows which lecture, slide and minute students got stuck on, and how many. The teacher decides what to change.5
04 · Now, where AI fits in.1
GAO FANG04 / 06
Good teaching already has a loop.
AI closes two gaps.2
Learners seek help
Where AI connects
Teachers decide
01
Gets stuck
05:10 · base case
02
Asks
Picks a line in the transcript
03
Sourced answer
Gap 1: students can't ask
04
Shared topics
Gap 2: teachers can't hear
05
Teacher adjusts
Decides, writes the change
Next round: fewer questions on the same slide means the change worked
Technology changes,
but the needs stay the same.3
Internet + everythingmade new apps for everyone.4
→Mobile internet + educationgave us NetEase Cloud Classroom and Youdao Smart Education.5
→AI + educationnow makes products for the same needs.6
AI only closes the gaps. Teaching and learning stay with people.7
Video · 1 min
GAO FANG
Lectiva
in one minute
Plays on its own. Press → when it ends.
▶
05 · Finally, what changes.1
GAO FANG05 / 06
Same teacher. Same course.
Now students are heard.2
Learners
When stuck,
learners can ask,
with a source.3
Teachers
Teachers hear the confusion.
They still decide.4
For the silent 91%
Questions have a source. Quiet students get a voice.5
Video · 1 min
GAO FANG
How to use it
in one minute
Plays on its own. The QR code stays on screen at the end.
▶
06 Try it now · 5-minute demo
GAO FANG06 / 06
Scan. Ask. Check the source.
MIT 6.0001 Intro to CS and Programming in Python · a test course from MIT OpenCourseWare
Scan with your phone camera
No account needed · valid until 23 Oct, 23:09 SGT
- ①
Scan the QR code
Tap Join, then agree. A name is optional.
- ②
Open Lecture 6
Learn → Recursion and Dictionaries
- ③
Select a line and tap “Ask about this”
Try 05:10, on base cases. Ask in English or Chinese.
- ④
Tap a source
It opens that slide page or that moment in the video.
- ⑤
Try “Ask my teacher”
It reaches me without your name.