[LON-CAPA-cvs] cvs: loncom /html/adm/help/tex adaptive_hints.tex exam_basics.tex numerical_wrong_answers.tex

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                             	numerical_wrong_answers.tex 
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Index: loncom/html/adm/help/tex/adaptive_hints.tex
+++ loncom/html/adm/help/tex/adaptive_hints.tex
\label{adaptive_hints}
Adaptive or conditional hints in LON-CAPA
Note: an extra space has been added before each tag closure in any tags included below so that the text will be displayed correctly by the FAQ-O-Matic.

Hints are placed within <hintgroup ></hintgroup > tags. The first part of the hint is the condition, which includes a specification of the foil(s) and foil answer(s) required to trigger the hint. The answers specified in the hint condition are compared with the user's submission, and if the condition is met, the hint action included in the conditional hint block will be executed (for example this could be the display of a block of text). You can set multiple hint conditions for a particular problem. Hint conditions are identified by a name. The corresponding hint action includes this hint condition name in the "on" parameter). When a hint condition evaluates to true, the corresponding hint action is triggered. Besides providing hint actions within <hintpart on="NAME" ></hintpart > tags for each named (NAME) hint condition, a hint can be designated for display if none of the conditional hints evaluate to true. The default hint is not displayed if the conditions were met for any of the conditional hints. The default hint action is included between <hintpart on="default" ></hintpart > tags.
There are five types of hint condition:

Formula Hint condition
Numerical Hint condition
Option Response Hint condition
Radiobutton Hint condition
String Hint condition

The syntax used to describe the foil(s) and the foil answer(s) differ for the five types:
1. Formula Hint condition
The formulahint tag takes three parameters: answer, name, and samples. The "name" is the unique name given to the hint condition. The formula answer for which you wish to provide conditional is included in the answer parameter. The samples parameter includes the points (or range of points) over which sampling of the student's submitted answer and the formula included in the formula hint answer parameter are to be compared. The syntax is the same as used to specify sampling points in the samples parameter of the formula reponse tag itself. The formula submitted by the student is evaluated at the sample points for the hint and the calculated values are compared with the corresponding values determined by evaluating the "hint" answer at the same sampling points. A close correspondence between the two sets of values will trigger the hint action specified in the <hintpart > tag.
<problem >
 <script type="loncapa/perl" ># Enter computations here 
 $x1 = random(2,4,1);
 $y1 = random(3,7,1);

 $x2 = random($x1+1,9,1);
 $y2 = random($y1+1,15,1);

 $m = "($y2-$y1)/($x2-$x1)";
 $b = "$y1-$m*$x1";
 $answer = "$m*x+$b";
 $answer =~ s/\+-/-/g;
 $answer =~ s/-\+/-/g;

 $inverted = "($x2-$x1)/($y2-$y1)";
 $wrongans = "$inverted*x";
 $wrongans =~ s/\+-/-/g;
 $wrongans =~ s/-\+/-/g;
</script >
<startouttext /><p > What is the equation of the line which passess through ($x1,$y1) and ($x2,$y2)?</p > y = <endouttext />
<formularesponse samples="x@-5:5#11" id="11" answer="$answer" >
 <textline size="25" / >
  <hintgroup >
   <formulahint samples="x@-5:5#11" answer="$wrongans" name="inversegrad" >
   </formulahint >
   <hintpart on="inversegrad" >
    <startouttext />You have inverted the slope in the question.  Slope is
(y2-y1)/(x2 - x1) you have the slope as (x2-x1)/(y2-y1).<endouttext / >
   </hintpart >
  </hintgroup >     
 </formularesponse >
</problem >

2. Numerical Response condition
The numericalhint tag takes four parameters: answer, name, unit and format. The "name" is the unique name given to the hint condition. The numerical answer for which you wish to provide conditional is included in the answer parameter. Student submission of that answer in combination with the "unit" parameter in the hint condition will trigger the hint action specified in the <hintpart > tag.

<problem > <startouttext />A car travels 10 km in 10 min. What is the speed of the car?<endouttext />
  <numericalresponse format="1f" unit="km/hr" answer="60">
   <responseparam description="Numerical Tolerance" default="2%" type="tolerance" name="tol" />
    <textline />
    <hintgroup >
     <numericalhint format="1f" unit="km/min" answer="100" name="speed">
       <responseparam description="Numerical Tolerance" type="tolerance" default="2%" name="tol" />
     </numericalhint >
      <hintpart on="speed">
       <startouttext />You multiplied the distance by the time.  Remember speed = distance/time<endouttext />
      </hintpart >
     </hintgroup >
   </numericalresponse >
</problem >
3. Option Response Hint condition
There are two types of option response hint conditions: one for standalone foils and one for concept groups. In both cases the option hint tag includes two parameters: answer and name for standalone foils, and concept and name for foils grouped together in a concept group. For the answer parameter, the names and submitted values for each of the foils that are being included in the hint condition are provided in a hash, i.e., in the format: ('Foil1'=>'True','Foil2'=>'False'). In the case of a conditional hint for a concept group, the format of the concept parameter is also a hash that links the name of each concept group included in the hint condition to either 'correct' or 'incorrect' - e.g., <optionhint concept="('buoyancy'=>'correct','density'=>'correct')" name="fluids" / > If 'correct' is specified for a named concept then when the conditional hint is evaluated answers for each of the foils selected by a student must be correct for the hint action to be triggered. If anything other than 'correct' is provided in the concept hash in the optionhint tag then then students answers will be compared with the set answers for the foils in the concept group and as long as at least one answer is incorrect (i.e., the concept group was not correctly answered) then the corresponding hint action will be triggered.
(a) optionresponse
<problem >
 <startouttext />For each of the following rock types, indicate whether or not the rock is a volcanic rock.<endouttext / >
 <optionresponse max="10" randomize="yes" >
  <foilgroup options="('Yes','No')" >
   <foil location="random" value="No" name="schist" >
    <startouttext />Schist<endouttext / >
   </foil >
   <foil location="random" value="No" name="marble" >
    <startouttext />Marble<endouttext / >
   </foil >
   <foil location="random" value="Yes" name="basalt" >
    <startouttext />Basalt<endouttext / >
   </foil >
   <foil location="random" value="No" name="gabbro" >
    <startouttext />Gabbro<endouttext />
   </foil >
   <foil location="random" value="No" name="granite" >
    <startouttext />Granite<endouttext />
   </foil >
  </foilgroup >
  <hintgroup >
   <optionhint answer="('schist'=>'Yes','marble'=>'Yes')" name="metamorphic"/ >
   <optionhint answer="('gabbro'=>'Yes','granite'=>'Yes')" name="plutonic" / >
   <hintpart on="metamorphic">
    <startouttext />Schist and Marble are both examples of metamorphic rocks
as described on page 2 of the textbook.<br / ><br / ><endouttext / >
   </hintpart >
   <hintpart on="plutonic" >
    <startouttext />Granite and Gabbro are both examples of igneous rocks that crystallized beneath the surface, i.e., they are plutonic rocks.<br / ><br / ><endouttext / >
   </hintpart >
   <hintpart on="default" >
    <startouttext />Volcanic rocks are described on page 22 of the
textbook.<endouttext / >
   </hintpart >
  </hintgroup >
 </optionresponse >
</problem >
(b) optionresponse with concept groups
<problem >
 <startouttext />Choose the likely plate boundary type, where you are most likely to encounter each of the following geologic features or phenomena.<endouttext / >
 <optionresponse max="10" randomize="yes" >
   <foilgroup options="('Convergent','Divergent','Transform')" >
     <conceptgroup concept="faulting" >
       <foil name="normal" value="Divergent" >
         <startouttext / >Normal faults<endouttext / > 
       </foil >
       <foil name="strike" value="Transform" >
         <startouttext / >Strike-slip faults<endouttext />
       </foil >
       <foil name="thrust" value="Convergent" >
         <startouttext />Thrust faults<endouttext />
       </foil >
     </conceptgroup >
     <conceptgroup concept="earthquakes" >
       <foil name="deep" value="Convergent" >
         <startouttext / >Large Magntitude, deep and intermediate focus earthquakes<endouttext / >
       </foil >
       <foil name="shallow" value="Transform" >
         <startouttext / >Large magnitude, shallow focus earthquakes<endouttext />
       </foil >
      <foil name="lowmag" value="Divergent" >
         <startouttext / >Low magnitude shallow focus earthquakes<endouttext />
       </foil >
     </conceptgroup >
     <conceptgroup concept="topography" >
       <foil name="gentle" value="Divergent" >
         <startouttext / >Broad area of elevated topography with a central rift valley.<endouttext / >
       </foil >
       <foil name="linear" value="Transform" >
         <startouttext / >A narrow linear fault zone with limited topgraphic expression.<endouttext / >
       </foil >
       <foil name="trench" value="Convergent" >
         <startouttext />A deep trench adjacent to a volcanic arc.<endouttext / >
       </foil >
     </conceptgroup >
     <conceptgroup concept="volcanism" >
       <foil name="explosize" value="Convergent" >
         <startouttext />Explosive volcanism involving volatile-rich viscous magma.<endouttext / >
       </foil >
       <foil name="fluid" value="Divergent" >
         <startouttext />Non-explosive outpourings of low-viscosity magma.<endouttext / >
       </foil >
       <foil name="nonvolcanic" value="Transform" >
         <startouttext />No volcanic activity.<endouttext / >
       </foil >
     </conceptgroup >
   </foilgroup >
   <hintgroup >
     <optionhint concept="('earthquakes' => 'incorrect')" name="quakes" / >
     <optionhint concept="('volcanism' => 'incorrect')" name="volcactivity" / >
     <optionhint concept="('topography' => 'incorrect')" name="relief" / >
     <hintpart on="volcanism" >
       <startouttext />Volcanism requires a source of magma. Magma can be generated by either a depression in the solidus caused by an influx of volatiles, or by decompression melting. Magma rich in volatiles tends to cause explosive volcanism.<endouttext / >
     </hintpart >
     <hintpart on="quakes" >
       <startouttext />Earthquakes require brittle failure, so there is a correlation between the depth of earthquake foci and the geotherm.  The geotherm is depressed in subduction zones, and elevated at mid-ocean ridges.<endouttext / >
     </hintpart >
     <hintpart on="relief" >
       <startouttext / >On a broad scale topography is an expression of density variation, as embodied in the concept of isostasy.  Density variation in the earth is a function of temperature and composition.  Cold oceanic crust entering a subduction zone is dense, whereas as magma is buoyant and of lower density.<br / ><br / ><endouttext / >
     </hintpart >
    <hintpart on="default" >
     <startouttext / >The characteristics of plate boundaries are described on page 52 of the textbook.<endouttext / >
    </hintpart >
   </hintgroup >
 </optionresponse >
</problem >
4. Radiobutton Hint condition

 The radiobutton hint tag takes two parameters: answer and name.  The name is
the name of the hint condition, and the answer is an array. The first element of the array will be 'foil'; the remaining elements are the names of the foils that you require to have been checked by the student for the hint to be displayed. For example, if you create a radiobutton response problem with six foils named: granite, gabbro, gneiss, shale, sandstone and schist, and you want your hint named: igneous to be displayed when either granite or basalt had been checked your radiobutton hint would be as follows:
  
 <radiobuttonhint answer="('foil','granite','gabbro')"
name="igneous" ></radiobuttonhint >
  In order to trigger display of this hint you also need to create a
<hintpart ></hintpart > block that will include a textblock that contains the text of the actual hint.
 <hintpart on="igneous" >
  <startouttext />This type of rock is composed of interlocking crystals, a
characteristic of igneous rocks.<endouttext / >
 </hintpart >
  The complete radiobutton response would look as follows:
 
<problem >
 <startouttext />
 Which of the following is a sedimentary rock?
 <endouttext />

 <radiobuttonresponse max="3" randomize="yes" >
   <foilgroup >
     <foil location="random" value="false" name="granite" >
    <startouttext / >
     Granite
    <endouttext / >
   </foil >

   <foil location="random" value="false" name="gabbro" >
    <startouttext / >
     Gabbro
    <endouttext / >
   </foil >

   <foil location="random" value="false" name="schist">
    <startouttext / >
     Schist
    <endouttext />
   </foil >

   <foil location="random" value="false" name="gneiss" >
    <startouttext / >
     Gneiss
    <endouttext / >
   </foil >

   <foil location="random" value="true" name="shale" >
    <startouttext / >
     Shale
    <endouttext / >
   </foil >
      <foil location="random" value="true" name="sandstone" >
    <startouttext / >
     Sandstone
    <endouttext / >
   </foil >

  </foilgroup >
  <hintgroup >
   <radiobuttonhint answer="('foil','granite','gabbro')"
name="igneous" ></radiobuttonhint >
   <radiobuttonhint answer="('foil','gneiss','schist')"
name="metamorphic" ></radiobuttonhint >

   <hintpart on="igneous" >
    <startouttext />This type of rock is composed of interlocking crystals, a
characteristic of igneous rocks.<br / ><br / ><endouttext / >
   </hintpart >
   <hintpart on="metamorphic" >
    <startouttext />This type of rock is composed of oriented crystals, a
characteristic of foliated metamorphic rocks.<endouttext / >
   </hintpart >
  </hintgroup >
 </radiobuttonresponse >
</problem >

5. String Hint condition
The radiobutton hint tag takes two parameters: answer and name. The name is the name of the hint condition, and the answer is a text string. The type parameter allows you to choose between case sensitive, case insensitive, and case insensitive in any order. A simple example is shown below.
<problem >
 <startouttext />Which US state has Lansing as its capital?<endouttext / >
  <stringresponse answer="Michigan" type="ci" >
  <textline size="20" / >
  <hintgroup >
   <stringhint answer="wisconsin" type="cs" name="wisc" >
   </stringhint >
   <stringhint answer="minnesota" type="cs" name="minn" >
   </stringhint >
   <hintpart on="wisc">
    <startouttext />The state capital of Wisconsin is Madison.<endouttext / >
   </hintpart >
   <hintpart on="minn">
    <startouttext />The state capital of Minnesota is St. Paul.<endouttext / >
   </hintpart >
   <hintpart on="default" >
    <startouttext />The state you are looking for is also known as the 'Great Lakes State'<endouttext / >
   </hintpart >     
  </hintgroup >
 </stringresponse >
</problem > 


Index: loncom/html/adm/help/tex/exam_basics.tex
+++ loncom/html/adm/help/tex/exam_basics.tex
\label{exam_basics}
There are multiple things here that you will need in order to do this.


1) you will need to be able to get a file from your scanning office
that is scan of the bubbled scantron sheets.
2) you will need to modify the scantronfromat.tab file to properly
describe what your data file looks like.


To see a hw problem set turned into a bubble sheet exam you need to

- set the parameter 'problemtype' for the set to 'exam'

The set of problems now it should automatically convert to a
'bubbled input' display, both online and when printing.

You should be able to print out all of the exams now and there will be
an individualized exam for each student.

When grading the exam you will need to 
1) goto the set
2) click PGRD
3) click on 'Grade Scantron Forms'
4) you will then need to upload the sacntron data file to the Lon-CAPA
server (it is the bottom option on that screen.)
5) one it is uploaded go back to the 'Grade Scnatron forms' screen
6) fill in the top form, and click 'Validata records'

>From there on out it tries to describe what is going on in detail so
reading the screen and answering the questions should be straight
forward.



In Lon-CAPA 1.2, we will be supporting a new mode of using scantron
form exams.

Basically some people don't want to take the time to hand out 300
exams to indiviual students (I.e make sure Alice gets Alice's exam and
Bob gets Bob's exam.) So we have another mode, where we generate
different exam versions all of which have a 6-letter 'CODE' which
control the random numbers. The generating and grading of these is a
bit more complex and

> You can find a description of this in

Anon

1) got to a resource in a course
2) hit PRT
3) select 'Problem from <mapname> for anonymous students'
4) click Next ->
5) type in the number of exams you want generated
6) if you want to save the CODEs for later so the bubbled input can be
    validated, type in a name to save them under
7) click Next->
8) print them out
9) fill in some scantron forms
10) get them scanned
11) upload the scan results
12) goto PGRD
13) click 'Grade' scantron form
14) Select the map, datafile, scantron format that knows where a CODE
     is on the form, and the name that CODEs where saved under
15) click 'Validate Scantron Records'
16) follow the on screen prompts.

Index: loncom/html/adm/help/tex/numerical_wrong_answers.tex
+++ loncom/html/adm/help/tex/numerical_wrong_answers.tex
\label{numerical_wrong_answers}
The quick explanation is you need to provide an array of incorrect
values to the <numericalresponse> throught the 'incorrect' attribute.
You need to provide at least as many incorrects as 1 less then the
number of bubbles on the exam. You can provide more if you want to.

(in Edit mode there should be an 'Incorrect Answers:' field you can
fill in)

Minimal example problem:

<problem>
  <script type="loncapa/perl">
    $answer=1;
    @incorrects=(2,3,4,5,6,7,8);
  </script>
  <startoutext />
    Correct answer is 1. <br />
  <endouttext />
  <numericalresponse answer="$answer" incorrect="@incorrects">
    <textline />
  </numericalresponse>
</problem>

Let me know if any this fails to work for you.

--www1086789322--