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Transfer check complete

Most learners revised the model.

Evidence from a new radius scale shows where understanding held—and where teacher follow-up still matters.

Prepared demonstration · deterministic data9 of 12 resolved
Assessment question
A circle has a radius of 3 cm. What happens to its area when the radius is doubled? Explain your reasoning.
Before and after

Possible misconception load

Before intervention9
learners in possible misconception clusters
→
After transfer check3
uncertain or requiring follow-up
9Resolved

Reasoning transferred to a new scale factor.

2Uncertain

Correct answer with incomplete evidence.

1Teacher follow-up

The original reasoning pattern persisted.

Response evidence

What changed in their thinking

Synthetic student labels

01
Learner 01Transfer answer: 9×
resolved

Explains that tripling radius gives 3² = 9 times the area.

02
Learner 02Transfer answer: 9×
resolved

Uses 25π and 225π to verify the factor.

03
Learner 03Transfer answer: 9×
uncertain

Correct answer, but explanation only says ‘square it’.

04
Learner 04Transfer answer: 9×
resolved

Contrasts circumference ×3 with area ×9.

05
Learner 05Transfer answer: 3×
follow-up

Returns to 2πr in the transfer question.

06
Learner 06Transfer answer: 9×
resolved

Writes π(15)² ÷ π(5)² = 9.

07
Learner 07Transfer answer: 9×
uncertain

Correct factor with an incomplete substitution step.

08
Learner 08Transfer answer: 9×
resolved

Leaves the ratio symbolic and avoids premature rounding.

09
Learner 09Transfer answer: 9×
resolved

Uses exact π terms and states the factor clearly.

10
Learner 10Transfer answer: 9×
resolved

Generalises with k².

11
Learner 11Transfer answer: 9×
resolved

Accurate visual and symbolic reasoning.

12
Learner 12Transfer answer: 9×
resolved

Checks the result numerically.