Objective
Demonstrate retained improvement through delayed reassessment.
Calculator: Non-calculator core; calculator optional only for checking where labelled.

Recall
Retrieve the key fact or method needed for delayed reassessment.
Core practice
Solve x²−8x+15=0 after a one-week delay and check roots.
Reasoning
Why does copying a corrected example immediately after feedback give weaker retention evidence than a delayed fresh problem?
Exam-style
Solve an exam-style problem involving delayed reassessment. Show working, include a check and interpret your answer.