22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

SyllabusCSE 260 · Database SystemsWk 1 The relational modelWk 2 SQL: select, join, groupWk 3 Normal formsWk 4 Indexing and B+ treesWk 5 TransactionsWk 6 Midterm 1Wk 12 RevisionDrafted by an agent, for your edit

Agent → ClassMon 09:00

Reminder: Quiz 3 closes Friday 17:00. 18 of 24 are in so far.

ApprovedReleased to the class. Filed.

22-0871 · Midterm 2 · Q4

Normalisation removes update, insertion and deletion anomalies. A table is in 3NF when every non-key column depends on the key, the whole key and nothing but the key. Splitting Orders into Orders and Customers means an address is stored once, so a move is one update, not forty.

Lesson planWeek 3 · Normal forms10 min Recap: keys25 min Worked 3NF example15 min Pairs: split Orders10 min Exit quizDrafted by an agent, for your edit

Agent → RahimTue 16:10

Your Midterm 2 mark is released: 14/20. The feedback is attached.

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Quiz 320 minutes · 10 marks1. Name the anomaly a 2NF table can still have.2. Write the query that lists each customer's last order.3. Define candidate key.Drafted by an agent, for your edit

Agent → ClassWed 08:00

Lecture 7 slides and notes are in the library.

22-0356 · Essay 1

Winston keeps the diary because memory is the last private property left to him. The paperweight is the past made solid, and when it breaks the past goes with it. Orwell makes the reader complicit: we read what he was forbidden to write.

Midterm 2Paper · 60 marksSection A (30 marks)Q1 Draw the ER diagram for the case.Q2 Prove the sum formula by induction.Section B (30 marks)Q3 Normalise the Orders table to 3NF.Drafted by an agent, for your edit

Agent → NadiaWed 11:32

Your recheck of Q2 is logged. Your teacher will see it today.

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

SlidesLecture 7 · Indexing1 Why a heap file is slow2 B+ trees3 Clustered and secondary4 The cost of a range scanDrafted by an agent, for your edit

Agent → TanvirThu 09:00

Two submissions missed. Office hours are Thursday at 14:00 — want a slot?

22-0871 · Midterm 2 · Q4

Lecture notesWeek 5 · TransactionsAtomicity: all of it or none of it.Consistency: the rules hold before and after.Isolation: as if it ran alone.Durability: written means kept.Drafted by an agent, for your edit

Agent → ClassFri 17:05

Quiz 3 is closed. Marks come as soon as your teacher approves them.

Mon 2Lecture 10:00

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Three agents agree. Waiting for your approval.

Tue 3Office hrs 14:00

22-0356 · Essay 1

Three agents agree. Waiting for your approval.

Wed 4✉ 3 replied

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

Three agents agree. Waiting for your approval.

Thu 5Quiz 3 closes

22-0871 · Midterm 2 · Q4

Three agents agree. Waiting for your approval.

Fri 6Marking due

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Three agents agree. Waiting for your approval.

Sat 7

22-0356 · Essay 1

Three agents agree. Waiting for your approval.

Sun 8

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

Three agents agree. Waiting for your approval.

Mon 9Lecture 10:00

22-0871 · Midterm 2 · Q4

Three agents agree. Waiting for your approval.

Tue 10Dept meeting

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Wed 11✉ extension: yes

22-0356 · Essay 1

Thu 12Office hrs 14:00

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

Fri 13Marks released

22-0871 · Midterm 2 · Q4

Sat 14

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Sun 15

22-0356 · Essay 1

Mon 16Lecture 10:00

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

Tue 17✉ 5 replied

22-0871 · Midterm 2 · Q4

Wed 18Midterm 2

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Thu 19Office hrs 14:00

22-0356 · Essay 1

Fri 20Recap: joins

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

Sat 21

22-0871 · Midterm 2 · Q4

Sun 22

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

Class reportMidterm 2 · 24 scriptsAverage 68%, median 70%.Hardest: Q4, 41% correct.Slipping: Tanvir, Mira, Joy.

Advice: a ten-minute recap on joins before Quiz 4, and a word with the three.

22-0356 · Essay 1

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

22-0871 · Midterm 2 · Q4

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

22-0356 · Essay 1

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

22-0871 · Midterm 2 · Q4

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

22-0356 · Essay 1

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

22-0871 · Midterm 2 · Q4

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

22-0356 · Essay 1

22-1042 · Midterm 2 · Q2

Show that 1 + 2 + … + n = n(n+1)/2. Base case n = 1: 1 = 1·2/2 ✓ Assume it holds for n = k. Then 1 + … + k + (k+1) = k(k+1)/2 + (k+1) = (k+1)(k+2)/2 ∎ so it holds for k+1 as well.

22-0871 · Midterm 2 · Q4

22-1190 · Quiz 3 · Q1

v² = u² + 2as s = (v² − u²) / 2a = (0 − 20²) / (2 × −4) = −400 / −8 = 50 m so the car stops in 50 m ✓

22-0356 · Essay 1

World’s first agent-driven student management system.For teachers, by teachers.

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Agents write your syllabus, lecture notes, quizzes and papers from your own material. You edit. You never start from blank.

Several agents read every script and mark it against your rubric, with the passage beside each mark, then wait for you. You approve. You do not re-read.

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Students submit from a phone and hear from an agent on a routine: reminders, released marks, feedback, a recheck when they ask. No email chains.

An agent keeps your inbox, your calendar and the term’s schedule: deadlines set, office hours booked, routine email answered in your voice. You open a tidy inbox.

Everything they make and everything students hand in is filed in the course library, and nothing reaches a student until you approve it. The judgement stays yours.

This is teaching without the paperwork.

How it works

Six jobs, in the order a term needs them. The agents do the work and wait. You read, change what you like, and approve.

Write the material
AgentsDrop in what you have: last year's slides, a chapter, your notes. The agents draft the syllabus, lesson plans, lecture notes, quizzes and exam papers from it, in an editor, from your course's own material.
YouRead it, change what you like, and it is filed in the course library.
GoneStarting a syllabus, a lecture or a quiz from a blank page.
Mark every script, then wait for you
AgentsStudents submit from a phone. Several agents read every page and mark each answer against your rubric, with the passage, a one-line reason and how sure they are beside every mark. Where they disagree, the script is flagged.
YouRead the flagged ones. Approve the rest in a pass. Nothing is released until you say.
GoneThe first read of every script. The whole weekend it took.
Watch the class and say what to do
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YouRead a short report, not a spreadsheet. Act on the three names it gives you.
GoneBuilding the class report by hand. Copying marks across.
Keep in touch with the students
AgentsA reminder before a deadline, marks and feedback the moment you release them, a reply to the question twenty people asked, a logged recheck when a student asks for one. All in the class channel and the student's portal, on a routine.
YouStep in when it matters. The rest already went out.
GoneRelaying results by email and answering the same question twenty times.
Keep your calendar and inbox
AgentsThe term lives in one calendar: lectures, office hours, quiz and assignment dates, the midterm. The agent books office hours, moves a deadline when you say, prepares the next class the day before, and answers routine email in your voice.
YouOpen a tidy inbox and a week that is already laid out.
GoneDiary juggling. The Sunday-night email backlog.
Approve, release, file
AgentsEverything the agents make and everything students hand in is filed in the course library, by folder and by class. Marks, feedback and material wait in one queue for your approval, doubt first.
YouOne pass through the queue. Release. The marksheet, the portal and the library update themselves.
GoneTallying totals and typing marks into a spreadsheet. Hunting for files.

Pictures are of the product, on a demonstration class.

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$0always
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Most teachers
$19per month
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300 scripts a month, then $0.10 each
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Billing is not switched on yet: every account is free today, and the paid tiers describe what those plans are meant to include.

What each plan includes, and how billing works →

AI agents write the material, mark the scripts, watch the class, talk to your students and keep your calendar. You approve what matters.

How it works

Write the material

Mark every script, then wait for you

Watch the class and say what to do

Keep in touch with the students

Keep your calendar and inbox

Approve, release, file

Pricing

01. Free

02. Teacher

03. Department