019 min
Inspect a linked answer
Read the flawed answer with its plausible source label.
Ask: “Does the presence of a source settle the claim?”
Listen for: “We need to see what it actually says.”
Brightlab
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Year 6 · Evidence
What must a source actually say to support a claim?
Go to the investigation ↓A clause-level evidence ledger and a corrected fictional information answer.
Which passage supports each part of your claim?
A source link is useful only if the passage supports the particular claim. Our ledger splits a fictional answer into claims and compares each with supplied passages. An exact number, date or qualifier can change whether support exists. The browser’s structured matching is deliberately narrow; it cannot judge every paraphrase or establish the truth of the source itself. Human reading remains essential.
Before this lesson: Separate an assertion from the passage offered as evidence. Useful earlier investigations: The expedition’s shrinking memory.
A source link is useful only if the passage supports the particular claim. Our ledger splits a fictional answer into claims and compares each with supplied passages. An exact number, date or qualifier can change whether support exists. The browser’s structured matching is deliberately narrow; it cannot judge every paraphrase or establish the truth of the source itself. Human reading remains essential.
Separate an assertion from the passage offered as evidence. Useful earlier investigations: The expedition’s shrinking memory.
Print three fictional reserve notices with dates and one condition. Prepare a deliberately flawed answer that changes a number and drops a weather exception. Read all notices before class.
ACARA V9 AI curriculum connection ↗ · Technologies ↗
A complete teaching sequence · 70 minutes
Read the flawed answer with its plausible source label.
Ask: “Does the presence of a source settle the claim?”
Listen for: “We need to see what it actually says.”
Before revealing the ledger, mark each clause as supported, contradicted or missing.
Ask: “Which word or number will you check first?”
Listen for: “The opening time and the exception.”
Edit claim values and attach passages. Observe clause-level matching and read the passage beside each result.
Ask: “What changed when 8 became 9?”
Listen for: “The passage no longer supported that time.”
Use the edge-case clause with a correct source label but an omitted condition.
Ask: “Why is the link still insufficient?”
Listen for: “The claim says always, but the source says only on dry days.”
Correct numbers, restore qualifiers and replace unsupported detail with an explicit unknown. Ask a partner to challenge one clause.
Ask: “What should an answer say when the notices do not contain the information?”
Listen for: “That the supplied sources do not establish it.”
Collect final clauses, excerpts, dates and unknowns.
Ask: “Could a supported claim still be false in the real world?”
Listen for: “Yes, the source itself could be wrong or outdated.”
A confident sentence or link proves a claim.
A correct link can accompany a wrong number or omit the source’s weather condition.
Produce an answer whose clauses each preserve source meaning or explicitly state that evidence is missing.
Require the exact supporting words and condition. Do not credit a green structured-match result without the student’s explanation of entailment.
| Criterion | Beginning | Secure | Extending |
|---|---|---|---|
| Evidence alignment | Lists sources without clauses | Links each clause to a relevant passage | Detects qualifier and date mismatches |
| Answer repair | Rewords unsupported material | Corrects claims and states unknowns | Distinguishes support from source truth and currency |
Start with two one-sentence notices; provide sentence frames for supported and unknown responses.
Write a paraphrase the narrow matcher cannot recognise, then explain why a human can still assess its support.
Only supplied fictional notices are used. The lab does not browse, verify live opening hours or replace a real information source.
Shared device? Turn remembering off. A project file lets you continue on another device.
Your browser is the laboratory
Classify each supplied answer clause before opening the evidence ledger.
Notice A says the gate opens at 8 am on dry days and is closed on wet days. Notice B says a paper map is available but gives no price. Initial claims say 9 am without a weather condition and a $2 map.
The experiment opens after your prediction.
There is no penalty for being surprised.
Apple Silicon · PyTorch MPS
Exhaustively evaluate fourteen structured claims under citation-only, numeric and qualifier checks. Change the source hour while keeping claims fixed; inspect every acceptance decision. This small tensor exercise has no claimed GPU speed advantage.
Students extend the experiment in teams, documenting parameters, outputs and limitations.
The bundle contains lesson-specific working code, a configuration file, a reactive notebook, a deterministic CPU check and hardware setup instructions. Acceleration is reported only after a tensor operation and result read-back succeed.
Download Mac Studio investigation ↓unzip y6-sources-mac-pathway.zip -d y6-sources-mac cd y6-sources-mac bash setup-mac.sh source .venv/bin/activate python experiment.py --device mps --output results marimo edit notebook.py
CPU and available-device execution status is recorded in the downloaded README and validation report. DGX Spark execution requires that hardware; static validation alone does not establish GPU compatibility or performance. The browser lesson remains fully available without this extension.
NVIDIA DGX Spark · PyTorch CUDA
Exhaustively evaluate fourteen structured claims under citation-only, numeric and qualifier checks. Change the source hour while keeping claims fixed; inspect every acceptance decision. This small tensor exercise has no claimed GPU speed advantage.
Students extend the experiment in teams, documenting parameters, outputs and limitations.
The bundle contains lesson-specific working code, a configuration file, a reactive notebook, a deterministic CPU check and hardware setup instructions. Acceleration is reported only after a tensor operation and result read-back succeed.
Download DGX Spark investigation ↓unzip y6-sources-dgx-pathway.zip -d y6-sources-dgx cd y6-sources-dgx bash run-dgx.sh # Open the localhost notebook URL printed by the container.
CPU and available-device execution status is recorded in the downloaded README and validation report. DGX Spark execution requires that hardware; static validation alone does not establish GPU compatibility or performance. The browser lesson remains fully available without this extension.
A clause-level evidence ledger and a corrected fictional information answer.
Download the editable handout →