Opening

GROW · SCIENCE · Lesson 8 of 11

Can we publish this headline?

Learning intention

Use supplied sources and repeated sample data to present a cautious explanation of heart-rate recovery.

“One pulse number reveals perfect health.”

Your research team must check the evidence.

Success looks like

Select a relevant source and extract a useful scientific idea.
Describe a pattern using values from repeated data.
Present a claim, evidence, explanation and limitation without ranking health.

Retrieval

GROW · SCIENCE · Lesson 8 of 11

Find the useful science

R1. What does the heart pump?

R2. Why might working muscles need more oxygen?

R3. Which is a number with a unit: “fast” or “96 beats/min”?

I do

GROW · SCIENCE · Lesson 8 of 11

I check what was compared

I read the method before the numbers.

The trials use the same planned conditions.

The numbers are a constructed classroom dataset.

A planned recovery comparison

Diagram description

A simplified scientific sequence: Keep the method:
same fictional person; Measure at set times:
0, 1 and 2 minutes; Compare repeats:
A, B and C. Constructed method: same activity and duration;
same room, recovery posture and recording method.

I do

GROW · SCIENCE · Lesson 8 of 11

I describe a pattern using values

Trial A: 120 immediately after activity.

One minute later: 96. Two minutes later: 80.

I say “fell towards 72”, not “fully recovered”.

Trial A recovery graph

Diagram description

Constructed sample line graph. Time after activity: 0 minutes, 120 beats per minute; 1 minute, 96; 2 minutes, 80. Vertical axis starts at zero. Resting value before trial: 72.

Continue within this stage’s shared time.

I do

GROW · SCIENCE · Lesson 8 of 11

I check repeats before a headline

Immediate values vary: 120, 116, 124.

Similar repeats strengthen a pattern description.

A mean summarises; it does not diagnose health.

Repeated immediate heart rates

Diagram description

Three zero-baseline bars show constructed immediate rates A 120, B 116, C 124 beats per minute. The mean is 120. Different trials can vary without one automatically being wrong.

Continue within this stage’s shared time.

We do

GROW · SCIENCE · Lesson 8 of 11

Evidence desk: find the pattern

Go to interactive investigation

Use the table and source cards on page 1.

W1. Describe the pattern in all three trials.

Use two values and name the units.

Constructed sample data only. All rates are beats per minute.
Measurement	A	B	C
Before activity	72	72	72
Immediately after (0 min)	120	116	124
After 1 min recovery	96	92	100
After 2 min recovery	80	76	84

My response — say it, sketch on paper or type

Research room: prediction, data and a limit

Predict first, test the model, then explain using the evidence. Move at your own pace; paper W1–W3 tasks assess the same reasoning.

Decision 1 of 3

Which design detail makes trial comparisons clearer?

Choose, test, then explain together. Evidence diagrams appear only after your test. Diagram transitions explain the model; they do not represent real elapsed time. Use Pause model to stop transitions and model controls, or your device’s reduced-motion setting. The printed We do activity provides the paper route.

We do

GROW · SCIENCE · Lesson 8 of 11

Which source helps explain it?

W2. Compare source A, B and C.

Choose one most directly relevant to heart-rate change.

Explain what the source cannot establish.

My response — say it, sketch on paper or type

Continue within this stage’s shared time.

We do

GROW · SCIENCE · Lesson 8 of 11

Write a better research headline

W3. Repair: “The fastest recovery proves the healthiest person.”

Use “in these sample trials” and a limitation.

My response — say it, sketch on paper or type

Continue within this stage’s shared time.

Hinge

GROW · SCIENCE · Lesson 8 of 11

A, B and C are three trials

Which conclusion matches the dataset?

You do

GROW · SCIENCE · Lesson 8 of 11

Prepare the research briefing

Choose one response route.

Include claim, evidence, explanation and limit.

Credit source A or B by organisation.

My response — say it, sketch on paper or type

You do

GROW · SCIENCE · Lesson 8 of 11

Use the reporting frame

“The sample data show …”

“For example … beats per minute.”

“NHLBI explains … ; we cannot conclude …”

My response — say it, sketch on paper or type

Continue within this stage’s shared time.

You do

GROW · SCIENCE · Lesson 8 of 11

Check your headline

Are A, B and C labelled as trials?

Have I kept units and sample-data label?

Have I avoided a diagnosis or fitness ranking?

My response — say it, sketch on paper or type

Continue within this stage’s shared time.

Review

GROW · SCIENCE · Lesson 8 of 11

Research editor check

Show one claim and its numerical evidence.

Ask whether the limit is clear.

Improve the headline before sharing.

My response — say it, sketch on paper or type

Review

GROW · SCIENCE · Lesson 8 of 11

Choose the next evidence question

Which would help: more repeats or an unsupported advert?

Propose one precise improvement to the method.

My response — say it, sketch on paper or type

Continue within this stage’s shared time.

Exit

GROW · SCIENCE · Lesson 8 of 11

An honest research result

E1. Give one pattern with two values.

E2. Name the relevant source organisation.

E3. Give one limit to the conclusion.

My response — say it, sketch on paper or type

My science task sheets

Choose one route with your teacher. Shared evidence and the exit sheet appear in every route. Your work stays here while the page is open; save it before closing.

1 • Shared evidence: the research room

All numbers are constructed sample data. A, B and C are repeat trials for one fictional person. Rates are beats per minute.

Time	A	B	C
Before activity	72	72	72
Immediately after (0 min)	120	116	124
After 1 min recovery	96	92	100
After 2 min recovery	80	76	84

Source A • NHLBI

During activity, heart rate usually rises to help supply working muscles with more oxygen. This can explain a response; it does not diagnose a person.

Source B • NHS

Regular suitable physical activity can support health. This is broad guidance, not proof that a particular short trial measures total health.

Source C • Unattributed advert

“One pulse number tells you exactly who is healthiest.” No author, method or supporting evidence is supplied. This is a fictional claim for evaluation.

Constructed method

One fictional participant; three separate trials using the same activity, duration, room, recovery posture and measurement schedule. No class trial took place.

W1. Describe the common recovery pattern with two values and units.W2. Which source best explains heart-rate change? Why? W3. Repair the “healthiest person” headline.

2 • Supported route: one clear briefing

Use trial A and source A on page 1.

S1. What do A, B and C label? Three different people Three repeat trials

S2. Complete: Trial A fell from ____ to ____ beats per minute over two recovery minutes.

S3. Is 80 the same as the starting 72? Yes: fully back to the starting value No: still above the starting value

S4. Complete: NHLBI explains that during activity the heart can beat faster to supply muscles with more ____ .S5. Write or dictate a 3-sentence briefing: pattern; numbers; one thing the sample cannot prove.

3 • Standard route: evidence-led briefing

Use the whole dataset and source cards.

N1. Describe the common pattern across A–C. Use two pairs of values and units.N2. Calculate the fall in trial A during the first minute. Show the subtraction.N3. Choose the most relevant source for the heart-rate explanation. Explain why the advert is weak evidence.N4. Write a short briefing with claim, evidence, scientific explanation and one limit.

4 • Stretch route: audit the research claim

Keep constructed data separate from real observations and general source information.

T1. Calculate the mean immediate rate and mean rate after 1 minute. Show your working and units.T2. Compare these means. Does this prove the same fall occurs for every person? Explain.T3. Identify two controls in the method and one useful improvement. Explain their purposes.T4. Write a cautious research headline and a 3-sentence briefing. Reject the claim that these data rank three people’s health.

5 • Exit and reflection

Give precise evidence, not a diagnosis.

E1. Give one recovery pattern using two values and units.E2. Name a relevant source organisation and the idea it supports.E3. Give one limit to what these records can establish.E4. Name one condition kept the same between trials and explain why.Reflection. What should the next paper dataset investigate?