Flashcards for OCR A Level History Selection of sources and interpretations, covering the key terms, dates and historical interpretations you need to recall for Unit group 1, Unit group 2 and Unit group 3, plus the Y100 non-exam assessment. 24 cards, matched to the OCR A Level History (H505) specification. Recall questions account for roughly 60% of marks at A Level History, so these target the marks you can secure before the paper starts.