// Numbas version: finer_feedback_settings
{"name": "Butterfly Math", "extensions": [], "custom_part_types": [], "resources": [["question-resources/butterfly1.jpg", "/srv/numbas/media/question-resources/butterfly1.jpg"], ["question-resources/butterfly2.jpg", "/srv/numbas/media/question-resources/butterfly2.jpg"], ["question-resources/butterfly3.jpg", "/srv/numbas/media/question-resources/butterfly3.jpg"], ["question-resources/butterfly4.jpg", "/srv/numbas/media/question-resources/butterfly4.jpg"], ["question-resources/butterfly3_bBOWlNc.jpg", "/srv/numbas/media/question-resources/butterfly3_bBOWlNc.jpg"]], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Butterfly Math", "tags": [], "metadata": {"description": "<p>subtraction of 2 fractions</p>", "licence": "Creative Commons Attribution-NonCommercial 4.0 International"}, "statement": "<p>Solve these problems</p>", "advice": "<p><strong>3/4 - 1/5</strong></p>\n<p>Connect diagonal numbers in a loop, to form the wings of the butterfly</p>\n<p><img src=\"resources/question-resources/butterfly1.jpg\"/></p>\n<p>Then draw the feelers of the butterfly attached to the top of each loop.</p>\n<p>Multiply the numbers in one loop and put the product in the space next the the feeler attached to that loop.</p>\n<p><strong>3x5=15</strong></p>\n<p>Repeat for the next loop and feeler.</p>\n<p><strong>4x1=4</strong></p>\n<p><img src=\"resources/question-resources/butterfly2.jpg\"/></p>\n<p>Subtract the number in the right feeler from the one in the left feeler and put the difference as the numerator of your answer.</p>\n<p><strong>15-4=11</strong></p>\n<p>Draw a curved line connecting the bottom of the two loops.</p>\n<p>Place the product of the two denominators in the space formed by the curve.</p>\n<p><img src=\"resources/question-resources/butterfly3_bBOWlNc.jpg\"/></p>\n<p><strong>4x5=20</strong></p>\n<p>Enter this number as the denominator of your answer.</p>\n<p><span style=\"text-decoration: underline;\"><strong>ANSWER = 11/20</strong></span></p>\n<p></p>\n<p><strong>2/7 + 2/3</strong></p>\n<p>Do the same thing for the next problem, except add where you subtracted before.</p>\n<p><img src=\"resources/question-resources/butterfly4.jpg\"/></p>\n<p><strong>2x3-6</strong></p>\n<p><strong>7x2=14</strong></p>\n<p><strong>6+14=20</strong></p>\n<p><strong>7x3=21</strong></p>\n<p><span style=\"text-decoration: underline;\"><strong>ANSWER = 20/21</strong></span></p>\n<p></p>", "rulesets": {}, "extensions": [], "variables": {"denom1": {"name": "denom1", "group": "Ungrouped variables", "definition": "c<d<b>a", "description": "", "templateType": "anything"}, "a": {"name": "a", "group": "numerator", "definition": "random(1 .. 7#1)", "description": "<p>numerator</p>", "templateType": "randrange"}, "c": {"name": "c", "group": "numerator", "definition": "random(1 .. 7#1)", "description": "<p>numerator</p>", "templateType": "randrange"}, "b": {"name": "b", "group": "denominator", "definition": "random(3 .. 9#1)", "description": "<p>denominator</p>", "templateType": "randrange"}, "d": {"name": "d", "group": "denominator", "definition": "random(3 .. 9#1)", "description": "<p>denominator</p>", "templateType": "randrange"}, "fract2": {"name": "fract2", "group": "Ungrouped variables", "definition": "a/b>c/d", "description": "", "templateType": "anything"}, "fract3": {"name": "fract3", "group": "Ungrouped variables", "definition": "a/b<1>c/d", "description": "", "templateType": "anything"}, "fract4": {"name": "fract4", "group": "Ungrouped variables", "definition": "x/y<1>w/z", "description": "", "templateType": "anything"}, "x": {"name": "x", "group": "numerator", "definition": "random(1 .. 7#1)", "description": "<p>numberator</p>", "templateType": "randrange"}, "w": {"name": "w", "group": "numerator", "definition": "random(3 .. 9#1)", "description": "<p>denominator</p>", "templateType": "randrange"}, "y": {"name": "y", "group": "denominator", "definition": "random(1 .. 7#1)", "description": "<p>numnerator</p>", "templateType": "randrange"}, "z": {"name": "z", "group": "denominator", "definition": "random(3 .. 7#1)", "description": "<p>denominator</p>", "templateType": "randrange"}, "denom3": {"name": "denom3", "group": "Ungrouped variables", "definition": "w<z\u2260y>x", "description": "", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["denom1", "fract2", "fract3", "fract4", "denom3"], "variable_groups": [{"name": "numerator", "variables": ["a", "c", "x", "w"]}, {"name": "denominator", "variables": ["b", "d", "y", "z"]}], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "jme", "useCustomName": false, "customName": "", "marks": "5", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>3/4 - 1/5</p>", "answer": "11/20", "showPreview": true, "checkingType": "absdiff", "checkingAccuracy": 0.001, "failureRate": 1, "vsetRangePoints": 5, "vsetRange": [0, 1], "checkVariableNames": false, "singleLetterVariables": false, "allowUnknownFunctions": true, "implicitFunctionComposition": false, "valuegenerators": []}, {"type": "jme", "useCustomName": false, "customName": "", "marks": "5", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>2/7 + 2/3</p>", "answer": "20/21", "showPreview": true, "checkingType": "absdiff", "checkingAccuracy": 0.001, "failureRate": 1, "vsetRangePoints": 5, "vsetRange": [0, 1], "checkVariableNames": false, "singleLetterVariables": false, "allowUnknownFunctions": true, "implicitFunctionComposition": false, "valuegenerators": []}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "type": "question", "contributors": [{"name": "Maureen Clement", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/10374/"}]}]}], "contributors": [{"name": "Maureen Clement", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/10374/"}]}