// Numbas version: exam_results_page_options {"name": "JSXGraph interactive Venn diagram", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "JSXGraph interactive Venn diagram", "tags": [], "metadata": {"description": "

This question demonstrates a few ways of interacting with a Venn diagram drawn using JSXGraph.

", "licence": "None specified"}, "statement": "", "advice": "", "rulesets": {}, "extensions": ["jsxgraph"], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"ns": {"name": "ns", "group": "Ungrouped variables", "definition": "shuffle(-7..7 except 0)[0..6]", "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_solo"], "variable_groups": [{"name": "One point", "variables": []}], "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) <>;\n circle([1.5,0],r) <>;\n text(-2.5,-r-0.5,\"{set1_name}\") <>;\n text(2.5,-r-0.5,\"{set2_name}\") <>;\n\"\"\",\n [\"grid\": false, \"axis\": false]\n)"}}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "extension", "useCustomName": true, "customName": "Several points, without checkboxes", "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": "

The Venn diagram below represents the set of integers, with the positive and even numbers as subsets.

\n

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.

\n

{venn_diagram_many_solo}

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