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Revisions to LTI information based on feedback from Valera
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docs/course_authors/source/create_lti.rst
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Working with LTI Components
============================
Overview
---------
You may have discovered or developed an external learning application that you want to add
to your online course. Or, you may have a digital copy of your textbook that uses
a format other than PDF. You can add external learning applications or
textbooks to Studio by using a Learning Tools Interoperability (LTI) XModule (**SP: OK
to say "component" instead of "XModule"? Our docs haven't talked about
XModules yet, so users may not know what they are.**).
The LTI XModule is based on the
`IMS Global Learning Tools Interoperability <http://www.imsglobal.org/LTI/v1p1p1/ltiIMGv1p1p1.html>`_
Introduction to LTI Components
------------------------------
You may have discovered or developed an external learning application
that you want to add to your online course. Or, you may have a digital
copy of your textbook that uses a format other than PDF. You can add
external learning applications or textbooks to Studio by using a
Learning Tools Interoperability (LTI) component. The LTI component is
based on the `IMS Global Learning Tools
Interoperability <http://www.imsglobal.org/LTI/v1p1p1/ltiIMGv1p1p1.html>`_
version 1.1.1 specifications.
You can use an LTI component in two ways.
- You can add external LTI content that is displayed only, such as textbook
content that doesn't require a student response.
- You can add external LTI content that requires a student response. An
external provider will grade student responses.
- You can add external LTI content that is displayed only, such as
textbook content that doesn’t require a student response.
- You can add external LTI content that requires a student response. An
external provider will grade student responses.
Before you create an LTI component from an external LTI provider in a unit, you must
have the following information so that you can register that provider.
Before you create an LTI component from an external LTI provider in a
unit, you need the following information.
- The **LTI ID**. This value is an internal string that specifies the external LTI
provider that you want to add to the course. (**SP: How does the user obtain this ID?
Does it have to be a certain length?**)
The LTI ID can contain uppercase and lowercase alphanumeric characters,
as well as underscore characters (_). For example, your LTI ID may be (**SP: Can
you provide an example LTI ID?**).
- The **LTI ID**. This is a value that you create to refer to the external LTI
provider. You should create an LTI ID that you can remember easily.
- The **client key**. This value is a string that is used for OAuth authentication.
You can obtain this value from the external LTI provider. (**SP: Does the key have to
have a specific number of characters? Are all types of characters allowed?**) For
example, your client key may be (**SP: Can you provide an example?**).
The LTI ID can contain uppercase and lowercase alphanumeric
characters, as well as underscore characters (_). It can contain any
number of characters. For example, you may create an LTI ID that is
as simple as **test_lti_id**, or your LTI ID may be a string of
numbers and letters such as **id_21441** or
**book_lti_provider_from_new_york**.
- The **client key**. This value is a sequence of characters that you
obtain from the LTI provider. The client key is used for
authentication and can contain any number of characters. For example,
your client key may be **b289378-f88d-2929-ctools.umich.edu**.
- The **client secret**. This value is a sequence of characters that
you obtain from the LTI provider. The client secret is used for
authentication and can contain any number of characters. For example,
your client secret may be something as simple as **secret**, or it
may be a string of numbers and letters such as **23746387264** or
**yt4984yr8**.
- The **launch URL** (if the LTI component requires a student response
that will be graded). You obtain the launch URL from the LTI
provider. The launch URL is the URL that Studio sends to the external
LTI provider so that the provider can send back students’ grades.
- The **client secret**. This value is a string that is used for OAuth authentication.
You can obtain this value from the external LTI provider. (SP: **Does the secret have to
have a specific number of characters? Are all types of characters allowed?** For
example, your client key may be (**SP: Can you provide an example?**).
Create an LTI Component
Create an LTI Component
-----------------------
Creating an LTI component in your course has three steps.
#. Add LTI to the **advanced_modules** policy key.
#. Add LTI to the **advanced_modules** policy key.
#. Register the LTI provider.
#. Create the LTI component in an individual unit.
Step 1. Add LTI to the Advanced Modules Policy Key
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#. On the **Settings** menu, click **Advanced Settings**.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#. On the **Settings** menu, click **Advanced Settings**.
#. On the **Advanced Settings** page, locate the **Manual Policy
Definition** section, and then locate the **advanced_modules**
policy key (this key is at the top of the list).
.. image:: Images/AdvancedModulesEmpty.gif
#. Under **Policy Value**, place your cursor between the brackets, and
then enter **"lti"**. Make sure to include the quotation marks,
but not the period.
then enter **“lti”**. Make sure to include the quotation marks, but
not the period.
.. image:: Images/LTI_Policy_Key.gif
**Note** If the **Policy Value** field already contains text, place your cursor directly after the
closing quotation mark for the final item, and then enter a comma followed by **"lti"** (make sure that you
include the quotation marks).
**Note** If the **Policy Value** field already contains text, place your
cursor directly after the closing quotation mark for the final item, and
then enter a comma followed by **“lti”** (make sure that you include the
quotation marks).
#. At the bottom of the page, click **Save Changes**.
The page refreshes automatically. At the top of the page, you see a
notification that your changes have been saved.
The page refreshes automatically. At the top of the page,
you see a notification that your changes have been saved.
Step 2. Register the External LTI Provider
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To regiser the external LTI provider, you'll add the LIT ID, the client key, and
the client secret in the **lti_passports** policy key.
#. On the **Advanced Settings** page, locate the **lti_passports** policy key.
To regiser the external LTI provider, you’ll add the LIT ID, the client
key, and the client secret in the **lti_passports** policy key.
#. On the **Advanced Settings** page, locate the **lti_passports**
policy key.
#. Under **Policy Value**, place your cursor between the brackets, and
then enter the LTI ID, client key, and client secret in the following format.
then enter the LTI ID, client key, and client secret in the following
format (make sure to include the quotation marks and the colons).
::
“lti_id:client_key:client_secret”
"{lti_id}:{client_key}:{client_secret}"
For example, the value in the lti_passports field may be the following.
"(**SP: Can you provide an example?**)"
For example, the value in the **lti_passports** field may be the following.
::
“test_lti_id:b289378-f88d-2929-ctools.umich.edu:secret”
If you have multiple LTI providers, separate the values with a comma.
Make sure to surround each entry with quotation marks.
::
"{lti_id_1}:{client_key_1}:{client_secret_1}",
"{lti_id_2}:{client_key_2}:{client_secret_2}",
"{lti_id_3}:{client_key_3}:{client_secret_3}"
"test_lti_id:b289378-f88d-2929-ctools.umich.edu:secret",
"id_21441:b289378-f88d-2929-ctools.school.edu:23746387264",
"book_lti_provider_from_new_york:b289378-f88d-2929-ctools.company.com:yt4984yr8"
#. At the bottom of the page, click **Save Changes**.
The page refreshes automatically. At the top of the page, you see a
notification that your changes have been saved.
The page refreshes automatically. At the top of the page,
you see a notification that your changes have been saved, and you can
see your entries in the **lti_passports** policy key.
Step 3. Add the LTI Component to a Unit
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#. In the unit where you want to create the problem, click **Advanced**
under **Add New Component**.
#. In the list of problem types, click **LTI**.
under **Add New Component**, and then click **LTI**.
#. In the component that appears, click **Edit**.
#. In the component editor, set the options that you want. See the table below
for a description of each option.
#. In the component editor, set the options that you want. See the table
below for a description of each option.
#. Click **Save**.
.. list-table::
:widths: 10 80
:header-rows: 1
@@ -130,22 +143,36 @@ Step 3. Add the LTI Component to a Unit
* - `Display Name`
- Specifies the name of the problem. This name appears above the problem and in
the course ribbon at the top of the page in the courseware.
* - `custom_parameters` [string]
- Enables you to add one or more custom parameters. Basically,
each individual external LTI provider can have a separate format custom
parameters. For example:
key=value
* - `custom_parameters`
- Enables you to add one or more custom parameters. For example, if you've added an
e-book, a custom parameter may include the page that your e-book should open to.
You could also use a custom parameter to set the background color of the LTI component.
Every custom parameter has a key and a value. You must add the key and value in the following format.
::
key=value
For example, a custom parameter may resemble the following.
::
bgcolor=red
page=144
To add a custom parameter, click **Add**.
* - `graded`
- Indicates whether the grade for the problem counts towards student's total grade. By
default, this value is set to **False**.
* - `has_score`
- Specifies whether the problem has a numerical score. By default, this value
is set to **False**. (**SP: Is this accurate?**)
is set to **False**.
* - `launch_url`
- Lists the URL that Studio sends to the external LTI provider so that the provider
can send back students' grades. This setting is only used if **graded** is set to
**True**. (**SP: Is this accurate? How does the user find the launch URL?**)
**True**.
* - `lti_id`
- Specifies the LTI ID for the external LTI provider. This value must be the same
LTI ID that you entered on the **Advanced Settings** page.
@@ -153,39 +180,9 @@ Step 3. Add the LTI Component to a Unit
- Indicates whether the problem opens in a new page. If you set this value to **True**,
the student clicks a link that opens the LTI content in a new window. If you set
this value to **False**, the LTI content opens in an IFrame in the current page.
* - `weight` [float]
- If the problem will be graded by an external LTI provider,
the raw grade will be in the range [0.0, 1.0]. In order to change this range,
set the `weight`. The grade that will be stored is calculated by the formula:
stored_grade = raw_grade * weight
.. note:: **SP: I'm not clear on what a custom parameter would be used for. Based on
the Studio UI, I'm guessing that one example would be the location of an
e-book, but I'm not sure what "vbid" would be. What else can custom parameters
be used for? Can we provide a specific example?**
**The following is an attempt at text for this description. Can you let
me know if it's accurate?**
Enables you to add one or more custom parameters. For
example, a custom parameter may include the location (**SP: Would it be
correct to say "URL" instead of "location"?**) of your e-book.
Every custom parameter has a key and a value. You must add the key and
value in the following format.
key=value
For example, a custom parameter that specifies the location of your e-book may
resemble the following.
**(SP: Can you provide a specific example of a custom parameter?)**
.. note:: **SP: Would it be correct to say the following?**
Specifies the number of points possible for the problem. By default, if
an external LTI provider grades the problem, the problem is worth 1 point,
and a student's score can be 0 or 1.
For more information about problem weights and computing point scores, see :ref:`Problem Weight`.
* - `weight`
- Specifies the number of points possible for the problem. By default, if an
external LTI provider grades the problem, the problem is worth 1 point, and
a student’s score can be any value between 0 and 1.
For more information about problem weights and computing point scores, see :ref:`Problem Weight`.