Converting to 24-hour time

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Merryn Horrocks

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2 years, 11 months ago

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Jim Pettigrew 2 years, 11 months ago

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Merryn Horrocks 2 years, 11 months ago

Gave some feedback: Ready to use

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Jim Pettigrew 3 years ago

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Question statement

{diagram}

Give any introductory information the student needs.

			Name	Type	Generated Value

diagram	jsxgraphboard	HTML node
minutes	integer	30
thetaMinutes	number	-1.5707963268
minuteHandCoords	vector	vector(0,-1.2)
minuteHandRadius	number	1.2
hours	integer	3
thetaHours	number	-0.2617993878
hourHandCoords	vector	Vector with 2 components
hourHandRadius	number	0.85
answer	string	0330
ampm	string	am
time	string	3:30

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
jessiecode(
  400,400, // Dimensions of JSXGraph board (in pixels)
  [-2.2,2.2,2.2,-2.2], // [left,top,right,bottom] in plot coordinates
  "hourHandCoordsX = {hourHandCoords[0]};hourHandCoordsY = {hourHandCoords[1]};minuteHandCoordsX = {minuteHandCoords[0]};minuteHandCoordsY = {minuteHandCoords[1]};"+safe("""
      im = image('resources/question-resources/clockImage_mod2.svg', [-2.05272,-2.05272],[4.10544,4.10544]) // In plot coordinates: [left x coord, bottom y coord],[distance from right to left, ditance from bottom to top]
         << highlight: false, fixed: true >>;
​
      segment([0,0],[hourHandCoordsX,hourHandCoordsY]) <<strokeColor: 'black', highlight: false, lastArrow: true, strokeWidth: 3.5, fixed: true>>;
      segment([0,0],[minuteHandCoordsX,minuteHandCoordsY]) <<strokeColor: 'black', highlight: false, lastArrow: true, strokeWidth: 3.5, fixed: true>>;
"""),
  [
    "axis": false,
    "grid": false,
    "showNavigation": false,
    "defaultAxes": ["x": ["scalable": true, "ticks": ["insertTicks": true, "minorTicks": 0], "ticksDelta": 0.1], "x": ["scalable": true, "ticks": ["insertTicks": true, "minorTicks": 9], "ticksDelta": 0.1]]
  ]
)

JME function reference

This variable is an interactive HTML node. Interactive HTML nodes can not be relied upon to work correctly when resuming a session - for example, attached event callbacks will be lost, and mathematical notation will likely also break.

If this causes problems, try to create HTML nodes where you use them in content areas, instead of storing them in variables.

Description

JSXGraph clock item. Note that the clockface is the image clockImage_mod2.svg in resources. Segments are the hour and minute hand respectively.

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `jsxgraphboard`

0,0

← Depends on:

hourHandCoords
minuteHandCoords

→ Used by:

Statement

Parts

Gap-fill
1. Gap 24HourTime Match text pattern
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

The time shown on the clock above is in the morning in the afternoon. What is this time on a 24-hour clock (use the format 1545, include leading zeros if needed)?

24HourTime

Advice

In 24 hour time format the time is written as a four digit number with the first two digits representing the hour of the day and the final two digits minutes past the hour.

Times between midnight and 1 am have the hour digits " $00$ ", times between 1 am and 12 pm have hour digits the same as the time shown when using a 12 hour system (with a leading " $0$ " for times prior to 10 am. For times from 1 pm to 11:59 pm we add 12 to the hour digits, hence 1 pm becomes " $1300$ " etc.

In this case the time given is $\var{time}\;\var{ampm}$ and hence we change the hours to $00$ add a leading $0$ to get the 24 hour time as $\var{answer}$ .

Give a worked solution to the whole question.

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Part	Test	Passed?
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Gap-fill		Hasn't run yet
Match text pattern
Match text pattern		Hasn't run yet

This question is used in the following exams:

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Practise your numeracy skills for PPE1 by Jim Pettigrew in MESH.
Test your numeracy skills for PPE1 by Jim Pettigrew in MESH.
PPE1 Nursing Numeracy Diagnostic by Elizabeth Camilleri in MESH.

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

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Checkpoint description

Jim Pettigrew 2 years, 11 months ago

Merryn Horrocks 2 years, 11 months ago

Jim Pettigrew 3 years ago

Error in variable testing condition

Error

Warning

Generated value: `jsxgraphboard`

Parts

Gap-fill

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Error

Converting to 24-hour time

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Jim Pettigrew 2 years, 11 months ago

Merryn Horrocks 2 years, 11 months ago

Jim Pettigrew 3 years ago

Error in variable testing condition

Error

Warning

Generated value: jsxgraphboard

Parts

Gap-fill

Generated value: `jsxgraphboard`