News by Levels · Level 2 · For teachers
Teacher guide & answers
In this lesson: Connect observations with predictions and explain why sensitivity matters.
Neutrino Data Test a Basic Rule of Physics
How to use these two pages
Give learners the student worksheet. It contains the story and questions, without the answers. Keep this guide for yourself. Use it to lead the activity and explain the answers afterwards.
Student worksheetA simple 15–20-minute lesson
- Before reading · 2 minutes
Show the title. Ask: “What do you think this story is about?”
- Read and answer · 8–10 minutes
Give out the student worksheet. Learners read for the main idea, then reread to answer the 2 questions. They can compare answers with a partner.
- Discuss and write · 5–8 minutes
Check the answers below together. Ask learners to point to the clue in the story, then finish with the open question.
Adjust the support: Let learners use word help or Level 1 if needed. For a challenge, compare the wording in another level. This activity is not a proficiency test.
Answers to the 2 questions
The question numbers match the student worksheet. Each answer includes a reason and the clue learners can find in the story.
Which measurements did the researchers compare with predictions?
Correct answer: C — Particle energies and arrival directions
Why: The first paragraph specifies both energies and arrival directions.
Clue in the story: Researchers used 1.4 years of neutrino data from the first six units of ORCA, an undersea detector. They compared particle energies and arrival directions with theoretical predictions.
Why might a smaller effect remain undetected?
Correct answer: A — It could be beyond the reach of this test.
Why: A test can have limited sensitivity, so the paragraph leaves room for smaller undetected effects.
Clue in the story: The team found no evidence against the rule it tested. Instead, it set limits on the size of certain possible effects. Smaller effects could remain beyond this test’s reach.
The open question: accept different answers
Ask learners: Describe the two changes researchers hope will make later tests more sensitive.
One possible answer: They hope to use a larger detector and more data. These changes may allow them to detect effects that the present test could miss.
This is an example, not the only correct answer. Look for a relevant idea, a reason and the learner’s own words. Learners can answer aloud or write one or two sentences.
Grammar to discuss
Instead introduces a different outcome
Instead, it set limits on the size of certain possible effects.
Instead links this result to the previous sentence. The team set limits as the outcome of finding no evidence against the rule.