Bell ringer: start here (while attendance happens)
Prior-knowledge probe · 5 min

From last block: three AI responses to the same paper said different things, and one of them named a chemical the paper never mentions.
Task: If you had to pick a science topic where you would expect sources to disagree with each other the most, what would it be, and why that one? 60 seconds with a partner. Hold your answer; you will use it in ten minutes.

Answer in your Field Notebook, dated.

Today we are learning

I can choose and justify a contested topic for my Source Dossier, and identify and begin OPVL on my first source.

I can: tick as you go (for you, not for marks)
full course map →
AI Partners available for today's work
Remember: every AI use gets documented. → AI Documentation Template

What today is about

The unit project starts today. Everything in Blocks 1 through 3 was preparation for it.

Here is the whole thing: pick one contested scientific topic, find three sources of different kinds, OPVL each one, work out where they disagree and why, and defend your evaluation in a five-minute talk. That is the Source Dossier, the Unit 0 summative. It is due at the start of Block 7 and defended in the same block.

You already have every skill it needs. Block 1 gave you two texts on one flood that did not agree. Block 2 put you inside a real 1965 paper. Block 3 showed you three AI responses to that paper, one of which confidently named a chemical Lovelock never wrote down. The dossier just asks you to do all of that on a question you picked yourself.

Today is about choosing well, because a badly chosen topic makes the next three blocks miserable. You will test candidate topics against one standard: do serious sources actually disagree about this? Then you lock it with Ms. Jayanthi/Mr. Ignash and start hunting your first source.

"Traditional" in the source list means "not generative AI": a textbook chapter, a news article, an interview, a peer-reviewed paper, a primary document. You OPVL two of those and one AI source. Separating them is deliberate, so you can feel what OPVL reveals about each type. The same four questions; very different answers.

Before you start the work

Start with the Watch: the project brief walked through end to end. The Reads are what you will keep coming back to for the rest of the unit, and the Interact is where you pressure-test your topic before committing to it.

Live in class
Watch (live demo, ~10 min)
Ms. Jayanthi/Mr. Ignash walks the Source Dossier brief end to end: the three source types, what the synthesis asks for, how the defense runs, and where the bands come from. Then two candidate topics get tested live, one that works and one that does not, thinking aloud about why.
Read: the brief itself
The full assessment: six steps, the three source types, format options, key dates, and the scoring table. This is the document you check your work against from now until Block 7.
The topic list
Straight to Step 1 of the brief: the topics that work, grouped Chennai and Tamil Nadu, India, then global, each with why it is contested. Read the section above it first if you are unsure what contested means.
Read: the annotated exemplar
A complete dossier on microplastics, deliberately not a topic on your list, annotated with why each section earns its band. It has one planted flaw in it. Find it.
Read (~10 min)
OPVL Framework: the four questions, the six source types reference table, what "traditional" sources have in common.
Interact: the contested test
In pairs, four minutes. Say your candidate topic out loud, then have your partner try to state the strongest opposing position a serious source would take. If neither of you can, the topic is not contested enough and you need a different one. Better to find that out now than in Block 6.

Today's work: choose one path

Topic conferences with Ms. Jayanthi/Mr. Ignash run all block; come to the desk when you are ready. Everything else is source-hunting. The path you pick is about how settled your topic already is.

Flow diagram of the Source Dossier: three sources (traditional, weaker, and AI) each get OPVL, flow into a synthesis, then a defense with a five-minute talk and two-minute Q&A; an AI Documentation Template rail runs alongside recording what the AI did, what you did, and one thing it got wrong; timeline markers show Blocks 4 through 7.
The whole project on one page. Find where you are today.
Learning Intention: I can choose and justify a contested topic for my Source Dossier, and identify and begin OPVL on my first source.
A
Decide between two or three candidates
You have a shortlist but no winner. For each candidate, spend ten minutes finding out whether two serious sources actually disagree. The one where you find real disagreement fastest is your topic. Lock it, then start source one.
Solo · Default
B
Topic settled, go straight to sources
If your topic is already clear to you, lock it early and spend the block hunting. Find your traditional reputable source and your weaker source, and get the first OPVL properly started. Aim for sources that take genuinely different angles, not two versions of the same take.
Solo · Stretch
C
No idea where to start
Open the topic list and pick the three that annoy, worry, or interest you most. Read one short thing on each. Choose the one you find yourself arguing with. Interest survives four blocks of work; obligation does not. Every topic there comes with a note on why sources disagree about it.
Solo · Choice
D
Topic-testing station
Not sure whether your topic is genuinely contested, or arrived with nothing at all? Come to the table, and bring the topic list if you have not chosen yet. Say it out loud and let two other students try to argue the other side. If nobody can, you have your answer and you save yourself three blocks of trouble. Ms. Jayanthi/Mr. Ignash floats. Capacity ~6 at a time.
Pairs · Practice

Open your Class Notebook and type today's entry header as Heading 2:

A: Aug 18 | U0 B4 | Source Dossier: Topic Choice and First SourceB: Aug 19 | U0 B4 | Source Dossier: Topic Choice and First Source

It will move you along on purpose

The Source Evaluator marks where you are: [O 1/4] for Origin through to [L 4/4] for Limitations. It will move you to the next letter after about three exchanges, even when your answer still feels rough. That is deliberate. Last time this ran, every conversation spent the whole period on Origin and never reached Limitations, which is the letter your Dossier is weakest on and the one the rubric looks hardest at. A rough L beats a flawless O.

Google Drive links will not open for it. Paste the text itself, or use the reading tool.

What you're submitting today

Submit your locked topic with its justification, plus whatever you have of source one. Feedback only: no bands on this one.

Topic lock + first source (submit by end of class)

Three things. Your topic. Two or three sentences on why it is genuinely contested, naming the two positions that disagree. And your first source with its OPVL started, however far you got.

The justification matters more than it looks. A topic where you cannot name two opposing positions will not survive the synthesis in Block 6, and it is much cheaper to discover that today.

Submit via Google Classroom (link posted in August)

Rubric link: OPVL specificity is the T/T strand all year. See the rubric; Source Dossier T/T scoring is mostly "how specific was your OPVL?"

One question before you leave

Three to five minutes. Your answer is saved to your reflection journal, where you can read back everything you have written this year.

Bring this to Block 5.

Today's reflection is in Google Classroom, under Reflection Journal.

Link posted in August

Sign in with your school account. Your teacher can see what you write here.

Before next class

Block 5 is the AI source and the documentation, and it needs your two traditional sources already done. This is the one substantial piece of homework in Unit 0.

Graded formative, same as your Lovelock OPVL. You bring it to Block 5.

OPVL your two traditional sources

Finish the OPVL on your traditional reputable source and complete one on your potentially weaker source. Four to eight sentences each, on the structured template.

Two things to hold on to while you write:

  • The Limitation must be specific to that source. "Could be biased" is not a Limitation, it is a shrug. Name what this particular source cannot tell you and why.
  • "Weaker" does not mean wrong. It means different Origin, Purpose, Value, and Limitations. If your weaker source turns out to be right about something, that is worth writing down.
Submit via Google Classroom (link posted in August)

If you cannot find a second source you are happy with, bring the search you tried and where it dead-ended. That is a real research problem and Block 5 opens with them. Coming in empty-handed with no account of why is the only version of this that does not work.