Practical results: reassess and explain

reassess the redesign

Use your R1–R3 records or supplied redesign/retest record. Keep the wet/changed/missing records visible. Compare redesigned sleeve with concurrent original sleeve, using the rises for each pair.

1. List each reference rise, redesign rise, difference and flag. Does the evidence support improvement? What should happen to an awkward result?

2. Check the redesign’s resource constraints. Write a revised claim and one exact next comparison.

evidence and explanation

1. Explain why a sleeve could slow warming without making the water colder or stopping all energy transfer. What can the temperature readings tell you?

2. Give two limits of your claim. Distinguish trial variation, display resolution and instrument accuracy.

3. Optional graph or table: represent one paired trial’s 0/5/10-minute readings. Label units and run ID; mark any anomaly. Explain one pattern using the representation.