// Numbas version: exam_results_page_options
{"name": "Venn2", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Venn2", "tags": [], "metadata": {"description": "<p>This question demonstrates a few ways of interacting with a Venn diagram drawn using JSXGraph.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "<p>Read the question and move the points to the correct section of the Venn diagram</p>", "advice": "", "rulesets": {}, "extensions": ["jsxgraph"], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"n": {"name": "n", "group": "One point", "definition": "random(-5..5 except 0)", "description": "", "templateType": "anything", "can_override": false}, "ns": {"name": "ns", "group": "Ungrouped variables", "definition": "shuffle(-7..7 except 0)[0..6]", "description": "", "templateType": "anything", "can_override": false}, "venn_diagram_many_checkboxes": {"name": "venn_diagram_many_checkboxes", "group": "Ungrouped variables", "definition": "jxg_add_objects(venn_diagram_2(\"Positive\",\"Even\"),\n  map(['point',[i-len(ns)/2,3],[\"id\":'n_{i}',\"size\":5,name:\"{ns[i]}\"]],i,0..len(ns)-1)\n)", "description": "", "templateType": "anything", "can_override": false}, "marking_matrix": {"name": "marking_matrix", "group": "Ungrouped variables", "definition": "map(\n  [award(1,n>0),award(1,mod(n,2)=0)],\n  n,\n  ns\n)", "description": "", "templateType": "anything", "can_override": false}, "venn_diagram_one_checkboxes": {"name": "venn_diagram_one_checkboxes", "group": "One point", "definition": "jxg_run_jessiecode(venn_diagram_2(\"Positive\",\"Even\"),\"\"\"\n  A = point(0,3) <<id: 'A', size: 5, withLabel: true, name: '{n}'>>;\n\"\"\")", "description": "", "templateType": "anything", "can_override": false}, "venn_diagram_one_solo": {"name": "venn_diagram_one_solo", "group": "One point", "definition": "jxg_run_jessiecode(venn_diagram_2(\"Positive\",\"Even\"),\"\"\"\n  A = point(0,3) <<id: 'A', size: 5, withLabel: true, name: '{n}'>>;\n\"\"\")", "description": "", "templateType": "anything", "can_override": false}, "venn_diagram_many_solo": {"name": "venn_diagram_many_solo", "group": "Ungrouped variables", "definition": "jxg_add_objects(venn_diagram_2(\"Positive\",\"Even\"),\n  map(['point',[i-len(ns)/2,3],[\"id\":'n_{i}',\"size\":5,name:\"{ns[i]}\"]],i,0..len(ns)-1)\n)", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["ns", "venn_diagram_many_checkboxes", "marking_matrix", "venn_diagram_many_solo"], "variable_groups": [{"name": "One point", "variables": ["n", "venn_diagram_one_checkboxes", "venn_diagram_one_solo"]}], "functions": {"venn_diagram_2": {"parameters": [["set1_name", "string"], ["set2_name", "string"]], "type": "jsxgraphboard", "language": "jme", "definition": "jessiecode(500,400,[-5,4,5,-4],\"\"\"\n  r = 2.5;\n  circle([-1.5,0],r) <<fillColor: 'green', id: 'c_1', fillOpacity: 0.5, strokeColor: 'black', fixed: true, highlight: false, hasInnerPoints: true>>;\n  circle([1.5,0],r) <<fillColor: 'blue', id: 'c_2', fillOpacity: 0.5, strokeColor: 'black', fixed: true, highlight: false, hasInnerPoints: true>>;\n  text(-2.5,-r-0.5,\"{set1_name}\") <<anchorX: 'middle', fontSize:30, fixed: true>>;\n  text(2.5,-r-0.5,\"{set2_name}\") <<anchorX: 'middle', fontSize:30, fixed :true>>;\n\"\"\",\n  [\"grid\": false, \"axis\": false]\n)"}}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "extension", "useCustomName": true, "customName": "Inter-active Venn diagram", "marks": "6", "scripts": {}, "customMarkingAlgorithm": "diagram: venn_diagram_many_solo\n\npoints (The points to move):\n  map(diagram[\"n_{i}\"],i,0..len(ns)-1)\n\ncoords (The coordinates of each point): \n  map(jxg_position(p),p,points)\n\ncorrect_memberships:\n  map(\n    [n>0, mod(n,2)=0],\n    n,\n    ns\n  )\n\nstudent_memberships (For each point, is it inside each of the subset circles?):\n  map(\n    [jxg_has_point(diagram[\"c_1\"],c), jxg_has_point(diagram[\"c_2\"],c)],\n    c,\n    coords\n  )\n\ncredit_per: 1/(2*len(ns))\n\nmark_points:\n  map(\n    let(\n      [c_1,c_2], correct, \n      [s_1,s_2], student,\n      if(c_1 = s_1,\n        add_credit(credit_per,if(c_1, \"{n} is positive.\", \"{n} is not positive.\"))\n      ,\n        negative_feedback(\n          if(s_1, \n            \"You said that {n} is positive, but it is not.\"\n          , \"You said that {n} is not positive, but it is.\"\n          )\n        )\n      )\n      if(c_2 = s_2,\n        add_credit(credit_per,if(c_2, \"{n} is even.\", \"{n} is not even.\"))\n      ,\n        negative_feedback(\n          if(s_2, \n            \"You said that {n} is even, but it is not.\"\n          , \"You said that {n} is not even, but it is.\"\n          )\n        )\n      )\n    ),\n    [correct,student,n],\n    zip(correct_memberships, student_memberships, ns)\n  )\n\nmark:\n  apply(mark_points)\n\ninterpreted_answer:\n  student_memberships", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>The Venn diagram below represents the set of integers, with the positive and even numbers as subsets.</p>\n<p>For each of the numbers {join(ns,', ')}, decide if it is positive and if it is even. Move the points representing the numbers to the appropriate positions on the diagram.</p>\n<p>{venn_diagram_many_solo}</p>"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "http://localhost:8000/accounts/profile/1/"}, {"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Yvonne Wancke", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3703/"}]}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "http://localhost:8000/accounts/profile/1/"}, {"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Yvonne Wancke", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3703/"}]}