// Numbas version: exam_results_page_options
{"name": "Placing points on a number line", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Placing points on a number line", "statement": "<p>Place the following points at the given positions on the number line by dragging them.</p>\n<p>To be marked correct you have to get the point within 0.1 of the correct position (in the horizontal direction, the vertical position doesn't matter).</p>", "advice": "<p>The correct positions of the points are shown on the number line below.</p>\n<p>{dragpointafter()}</p>", "parts": [{"showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "customMarkingAlgorithm": "", "prompt": "<p>$A=\\var{a}$, $B=\\var{b}$, $C=\\var{c}$ and $D=\\var{d}$.</p>\n<p>{dragpoint()}</p>", "type": "gapfill", "unitTests": [], "sortAnswers": false, "marks": 0, "gaps": [{"showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "minValue": "a-0.1", "mustBeReducedPC": 0, "customMarkingAlgorithm": "", "correctAnswerFraction": false, "maxValue": "a+0.1", "allowFractions": false, "notationStyles": ["plain", "en", "si-en"], "mustBeReduced": false, "type": "numberentry", "unitTests": [], "marks": 1, "correctAnswerStyle": "plain"}, {"showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "minValue": "b-0.1", "mustBeReducedPC": 0, "customMarkingAlgorithm": "", "correctAnswerFraction": false, "maxValue": "b+0.1", "allowFractions": false, "notationStyles": ["plain", "en", "si-en"], "mustBeReduced": false, "type": "numberentry", "unitTests": [], "marks": 1, "correctAnswerStyle": "plain"}, {"showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "minValue": "c-0.1", "mustBeReducedPC": 0, "customMarkingAlgorithm": "", "correctAnswerFraction": false, "maxValue": "c+0.1", "allowFractions": false, "notationStyles": ["plain", "en", "si-en"], "mustBeReduced": false, "type": "numberentry", "unitTests": [], "marks": 1, "correctAnswerStyle": "plain"}, {"showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "showFeedbackIcon": true, "scripts": {}, "variableReplacements": [], "minValue": "d-0.1", "mustBeReducedPC": 0, "customMarkingAlgorithm": "", "correctAnswerFraction": false, "maxValue": "d+0.1", "allowFractions": false, "notationStyles": ["plain", "en", "si-en"], "mustBeReduced": false, "type": "numberentry", "unitTests": [], "marks": 1, "correctAnswerStyle": "plain"}]}], "ungrouped_variables": ["a", "b", "c", "d"], "variablesTest": {"condition": "abs(a-b)>=1 and abs(a-c)>=1 and abs(a-d)>=1 and abs(b-c)>=1 and abs(b-d)>=1 and abs(c-d)>=1", "maxRuns": 100}, "extensions": ["jsxgraph"], "variables": {"b": {"definition": "random(-10..10#0.1)", "name": "b", "description": "", "group": "Ungrouped variables", "templateType": "randrange"}, "d": {"definition": "random(-10..10#0.1)", "name": "d", "description": "", "group": "Ungrouped variables", "templateType": "randrange"}, "a": {"definition": "random(-10..10#0.1)", "name": "a", "description": "", "group": "Ungrouped variables", "templateType": "randrange"}, "c": {"definition": "random(-10..10#0.1)", "name": "c", "description": "", "group": "Ungrouped variables", "templateType": "randrange"}}, "preamble": {"js": "", "css": ""}, "rulesets": {}, "metadata": {"description": "<p>This question allows you to practice placing points on a number line.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "functions": {"dragpoint": {"definition": "// set up the board\nvar div = Numbas.extensions.jsxgraph.makeBoard('500px','150px',{boundingBox:[-11,1.5,11,-1.5],axis:false,showNavigation:false});\nvar board = div.board;\n\nvar ax1 = board.create('line', [[0,0],[1,0]]);\nboard.create('ticks',[ax1, 2], {minorTicks:1, majorHeight:20, minorHeight:10, tickEndings:[0,1], drawZero:true, drawLabels:true, label:{offset:[-4, -20]}});\nax1.setProperty({fixed:true});\n\nvar w = Numbas.jme.unwrapValue(scope.variables.a);\nvar x = Numbas.jme.unwrapValue(scope.variables.b);\nvar y = Numbas.jme.unwrapValue(scope.variables.c);\nvar z = Numbas.jme.unwrapValue(scope.variables.d);\n\nvar a = board.create('point',[-9,1],{size:5});\nvar b = board.create('point',[-3,1],{size:5});\nvar c = board.create('point',[3,1],{size:5});\nvar d = board.create('point',[9,1],{size:5});\n\na.on('drag',function(){\n  Numbas.exam.currentQuestion.parts[0].gaps[0].display.studentAnswer(a.X());  \n});\n\nb.on('drag',function(){\n  Numbas.exam.currentQuestion.parts[0].gaps[1].display.studentAnswer(b.X());  \n});\n\nc.on('drag',function(){\n  Numbas.exam.currentQuestion.parts[0].gaps[2].display.studentAnswer(c.X());  \n});\n\nd.on('drag',function(){\n  Numbas.exam.currentQuestion.parts[0].gaps[3].display.studentAnswer(d.X());  \n});\n\nreturn div;", "parameters": [], "language": "javascript", "type": "html"}, "dragpointafter": {"definition": "// set up the board\nvar div = Numbas.extensions.jsxgraph.makeBoard('500px','75px',{boundingBox:[-11,0.75,11,-1],axis:false,showNavigation:false});\nvar board = div.board;\n\nvar ax1 = board.create('line', [[0,0],[1,0]]);\nboard.create('ticks',[ax1, 2], {minorTicks:1, majorHeight:20, minorHeight:10, tickEndings:[0,1], drawZero:true, drawLabels:true, label:{offset:[-4, -20]}});\nax1.setProperty({fixed:true});\n\nvar w = Numbas.jme.unwrapValue(scope.variables.a);\nvar x = Numbas.jme.unwrapValue(scope.variables.b);\nvar y = Numbas.jme.unwrapValue(scope.variables.c);\nvar z = Numbas.jme.unwrapValue(scope.variables.d);\n\nvar a = board.create('point',[w,0],{size:5});\na.setProperty({fixed:true});\nvar b = board.create('point',[x,0],{size:5});\nb.setProperty({fixed:true});\nvar c = board.create('point',[y,0],{size:5});\nc.setProperty({fixed:true});\nvar d = board.create('point',[z,0],{size:5});\nd.setProperty({fixed:true});\n\nreturn div;", "parameters": [], "language": "javascript", "type": "html"}}, "tags": [], "variable_groups": [], "type": "question", "contributors": [{"name": "Anthony Brown", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/799/"}]}]}], "contributors": [{"name": "Anthony Brown", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/799/"}]}