8 - 5 = 13$ B1","marks":1,"order":0,"markingRubric":{"totalMarks":1,"points":[{"id":"p1","marks":1,"description":"Correct range of 13.","code":"B"}],"finalAnswers":["13"],"generatedAt":"2026-05-06T15:36:46.080Z","modelVersion":"gemini-3-flash-preview"},"explanation":{"methods":[{"id":"find_range","label":"Find the range","steps":[{"type":"text","order":0,"title":"Find the extreme values","content":"The **range** tells you how spread out the data are. Find the largest and smallest card values: the largest is $18$ and the smallest is $5$.","highlights":[{"text":"Work out the range of the numbers on the cards.","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"\\htmlData{anchor=calculation}{18-5=13}"},{"text":"This complete calculation earns the B1 mark."}],"highlights":[{"color":"green","style":"text-color","anchor":"calculation"}]},"order":1,"title":"Subtract to find range","description":"Calculate largest value minus smallest value."}]}],"generatedAt":"2026-07-21T04:00:16.476Z","modelVersion":"gpt-5.6-terra","explanationVersion":"v3"},"options":[]},{"id":"7f4756cb-0678-4e3d-9922-964c7380b234","label":"b","content":"Work out the median of the numbers on the cards.","markscheme":"- Ordered list: 5, 9, 10, 11, 12, 12, 18 M1\n- Median is 11 A1","marks":2,"order":1,"markingRubric":{"totalMarks":2,"points":[{"id":"p1","marks":1,"description":"Orders the list correctly.","code":"M"},{"id":"p2","marks":1,"description":"Identifies 11 as the middle value.","code":"A"}],"finalAnswers":["11"],"generatedAt":"2026-05-06T15:36:46.080Z","modelVersion":"gemini-3-flash-preview"},"explanation":{"methods":[{"id":"order_and_select","label":"Order the numbers","steps":[{"type":"text","order":0,"title":"List in order","content":"The median is the middle number, so first arrange all seven numbers from smallest to largest. This ordering earns the **M1** mark.\n\n$$5,\\ 9,\\ 10,\\ 11,\\ 12,\\ 12,\\ 18$$","highlights":[{"text":"Work out the median of the numbers on the cards.","location":"specification"}]},{"type":"text","order":1,"title":"Find the middle","content":"There are seven numbers, so the fourth number is in the middle: three numbers are before it and three are after it.\n\n$$\\boxed{11}$$\n\nTherefore, the median is **11**, earning the **A1** mark.","highlights":[{"text":"median","location":"specification"}]}]}],"generatedAt":"2026-07-21T04:00:58.897Z","modelVersion":"gpt-5.6-terra","explanationVersion":"v3"},"options":[]},{"id":"909859f0-8e0b-403b-ade1-adf493ece709","label":"c","content":"Work out the mean of the numbers on the cards.","markscheme":"- Sum: $5 + 9 + 10 + 11 + 12 + 12 + 18 = 77$ M1\n- $77 \\div 7 = 11$ A1","marks":2,"order":2,"markingRubric":{"totalMarks":2,"points":[{"id":"p1","marks":1,"description":"Shows sum of 77 or division by 7.","code":"M"},{"id":"p2","marks":1,"description":"Final answer of 11.","code":"A"}],"finalAnswers":["11"],"generatedAt":"2026-05-06T15:36:46.080Z","modelVersion":"gemini-3-flash-preview"},"explanation":{"methods":[{"id":"add_then_divide","label":"Add then divide","steps":[{"type":"text","order":0,"title":"Use the mean rule","content":"The **mean** is the total of all the values divided by how many values there are. There are $7$ cards, so first find the total.","highlights":[{"text":"Work out the mean of the numbers on the cards.","location":"specification"}]},{"type":"hyper_latex","block":{"nodes":[{"latex":"\\htmlData{anchor=values}{\\color{@sky}{5+9+10+11+12+12+18}}"},{"latex":"\\htmlData{anchor=total}{\\color{@sky}{5+9+10+11+12+12+18=77}}"}],"highlights":[{"color":"sky","style":"text-color-with-background","anchor":"total"}],"connections":[{"to":"total","from":"values","color":"sky","label":"add the values"}]},"order":1,"title":"Add all seven values","description":"Put the card values in order to make the addition easier. This correct total earns the first mark."},{"type":"hyper_latex","block":{"nodes":[{"latex":"\\htmlData{anchor=total}{\\color{@sky}{77}}\\div\\htmlData{anchor=count

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