Principle of Representation - Guideline 1 Criterion 2 (v 3.0)
When developing a course using the first principle of Universal Design for Learning, there
are three specific guidelines to assist us.
The first, Perception in many ways overlaps with creating
accessible content.
Criterion 2 of this guideline advocates that we provide alternatives to perceive information.
Images,
info-graphics, and video can be a superior way to presenting content.
This is particularly true when demonstrating relationships, such as between
actions or events. A picture can stay 1000 words, but not if you cannot see
it. These presentations can abandon those with visual disabilities. To
ensure equitable access, offer non-visual learners alternatives, such as:
Providing
descriptions (text, spoken,
or both) for all images, graphics, tables, and other visual content
Providing
auditory cues for key concepts
and transitions in visual information
Providing
physical models (when
possible) to convey perspective or interaction
Adding
a primacy to supplying textual representations that can easily be
converted to text-to-speech.
The malleable nature of text on the web has an advantage of permanence
and flexibility. Having Closed Captions, a transcript, or visual
description should always be included. Offering a text-to-speech
option alongside the text further benefits the
learners.
Text is a special case of visual information. For those with
visual impairment, how the text is presented is critical. Be sure to use
accessibly standards to the text you employ, such as those provided by NIMAS or WCAG.There is an advantage to text in that many
tools can easily work with it to provide alternative means of communicate.Minimally, a text-to-speech option should be
available for learners.
Sound is a very effective teaching tool, and the addition to sound to video, or text, can
accelerate learning. However, information solely conveyed with audio is not
equally accessible to all learners. This is more so with learners with
hearing disabilities. Ensure that all learners have access to information by:
Providing written transcripts of
closed captions to video or audio clips
Provide visual diagrams, charts,
and notations to sound (such as music)
Offer visual analogues, such as
symbols or images.
When no voice is to be transcribed,
offer visual/emotional description of audio, such as musical clips.
Finally, one should note that there are several new
technologies that can convert to text to speech.However, research reveals that learners
prefer and thrive with human audio over computer generated speech (Mayer,
2009). Given the option, you should
favor creating or using human audio to both increase learning and for
generating a more welcoming learning environment.
By following these suggestions, your course will assist students communicating and expressing their knowledge, as well as being in line the Principle of Representation in the Theory of Universal Design for Learning.
AI-driven tools are increasingly shaping classrooms through
adaptive learning platforms, tutoring systems, lesson-planning assistants, and
other educational technologies. Their true potential, however, is realized when
they are designed and implemented using Universal Design for Learning <UDL>
principles. By combining what we know from learning science through Universal
Design for Learning with the personalization capabilities of AI, we can
intentionally design learning experiences and tools that support all learners
from the outset, rather than relying on time-consuming retrofits later.
AI has already enhanced many traditional assistive
technologies, such as text-to-speech and voice recognition, making them more
accurate and natural-sounding. The next exciting frontier for AI in learning
lies in its ability to reduce cognitive load. In this phase, AI functions
as assistive instruction by helping individuals more
efficiently understand and process information.
When AI is intentionally integrated with Universal Design
for Learning, these tools make content more accessible and support deeper, more
meaningful engagement for all learners.
3 Ways AI & Universal Design for Learning Can Mix:
1.AI equals Assistive Instruction.
People with disabilities often rely on assistive technologies to learn and navigate the world. AI has already improved many of these tools, such as text-to-speech. The next major opportunity for AI in learning is its ability to reduce cognitive load by helping learners more quickly understand and process information. For individuals with executive functioning or language-processing challenges, tasks like organizing information or reading complex texts can be exhausting barriers to deeper learning. AI tools that adjust reading levels or simplify complex content. such as scientific explanations, can make academic material more accessible and support meaningful engagement. When combined with Universal Design for Learning, these tools
help learners access content more easily and engage more deeply.
2.Don’t Retro-fit – Co-Design!
Frequently,
educational technology is designed with an “average” student in mind.
Because no learner is truly average, this approach often results in
hidden barriers within the technology that excludes many learners. These
barriers require educators and institutions to spend additional time and
resources modifying or accommodating tools after the fact for those they do not
initially serve. Instead of retrofitting solutions, you should account for
learner variability from the beginning and actively include learner voices in
the design process.
By co-designing with learners and applying Universal Design for Learning principles from the outset, developers and teachers can reduce barriers, improve accessibility, and reach a broader audience. Importantly, involving diverse voices, such as people with disabilities and multilingual learners, early in development often leads to more innovative and effective solutions that benefit all users.
3.Use Universal Design
for Learning to support AI-Tool Development and AI Literacy.
Everyone brings
unique perspectives and experiences to learning, so we should not treat them
the same. To address this predictable variability, Universal Design for
Learning provides a framework for identifying and reducing hidden barriers that
limit access.
The theory’s guidelines can assist AI developers in anticipating learner needs, and by building multiple means of engagement, representation, and expression. When educators apply Universal Design for Learning, they create more accessible learning environments, strengthen learner agency, and offer flexible pathways to success. AI can further extend these benefits by providing personalized support tailored to individual learners. Beyond AI-powered tools, the Universal Design for Learning guidelines should also inform the design and implementation of AI literacy education to ensure it is accessible, flexible, and inclusive for all learners.
It is important to understand that AI is a tool and not a
solution. When using this tool with the
guidance of the principles of Universal Design for Learning, they can help
create more effective learning environments. One should always be cautious with
AI applications and use them responsibly. When doing so, they offer several
fecund options for education.
The three principles of UDL each address specific aspects of learning and how we process information. They are:
Representation: which focuses on recognition networks in the mind.
Action and Expression: which focuses strategic network in the mind
Engagement: which focuses on affective networks in the mind
The second principle pertains to how we present information
to learner. Essentially, it is about how they are learning.To
ensure learning is most successful, offer a choice of multiple expression of
the material to be learned.
We all differ in how we approach a learning environment and
how we express our knowledge. Often we approach learning tasks differently
depending on our experiences. We should expect these variations not only
from those with significant physiological impairments, but also from cultural
differences and those with language barriers. Simply, we all vary in how
we approach learning. While some may favor writing and not oral
presentations, others may prefer oral presentations, such as those with severe
dyslexia. Because our actions and expressions differ in our practices,
strategy, and organization, a more inclusive approach is to develop learning
environments where learners have options that can accommodate these differences
There are three guidelines to follow when focusing on the
action and expression in learning. They are:
Interaction (previously called Physical Action)
Expression and Communication
Strategic Development (previously called Executive Function)
Each of these guidelines, each with their own goals to meet, ensure students have the best chance to learn. Meeting the Principle of Action and Expression also contributes to student inclusion, as it offers a variety of ways for students to choose how they will learn. This results in overall student success and is just good practice in teaching
The update builds on earlier versions of Universal Design for Learning by focusing more directly on reducing barriers caused by bias and systems of exclusion for learners with and without disabilities. It intentionally includes the voices and perspectives of practitioners and scholars who were underrepresented in previous editions. The goal is to strengthen the Guidelines as a tool for designing learning environments that better support and value every learner.
This updated version of the UDL Guidelines expands them in several important ways. It connects Universal Design for Learning more clearly with other asset-based approaches and frameworks, especially those that center and sustain learners’ cultural identities and experiences. It places stronger emphasis on identity as an important part of learner variability, recognizing not only how students learn but also who they are. This “who” of learning is woven throughout all three Universal Design for Learning principles.
The update acknowledges barriers at individual, institutional, and system levels, highlights the importance of interdependence and collective learning, and shifts the language from being educator-centered to more learner-centered. Together, these changes strengthen Universal Design for Learning as a more inclusive and responsive framework.
Previous versions technically included these inclusive teaching techniques implicitly throughout the guidelines. However, when we include information implicitly, we risk that some will overlook these or infer that these practices are not as valuable. This is why it is best to explicitly state the material.
How Does This Affect Me?
There is some overlap between different versions of the Guidelines, and many of the guidelines and criteria remain the same. However, you may still find older versions online that use slightly different language. To help reduce confusion, include the previous names alongside the updated ones.
As a general rule, it is a good idea to check which version is being referenced in any material you use.
When developing a course using the third principle of Universal Design for Learning, there
are three specific guidelines to assist us.
The second, Sustaining Effort and Persistenceaddresses
maintaining focus and determination.
Criterion 1 of this guideline advocates that we focus
attention on the salience of goals and objectives
Many sources of interest compete for attention during the
course of any long project or practice. For example, some learners will require
reminding of their initial goal or what will happen when they obtain that goal.
In this case, it is important to regularly offer elements to remind them of the
goal and the value of meeting it. This will assist these learners in
sustaining effort or concentration to overcome factors that may distract them
from meeting the goal.
When re-enforcing the understanding of goals and objectives,
consider:
Displaying the goal or objectives in
multiple ways or throughout the learning activity
Prompting
learners to explicitly formulate or restate goals
Encouraging division of long-term
goals into short-term objectives or demonstrate how this is done
Using prompts to visualizing desired
outcome
Engaging learners in assessment
discussions of what constitutes excellence and meeting the goals. Be
prepared to accommodate different cultural backgrounds and interests
Providing exemplars to
demonstrate goal achievement.
By following these suggestions, your course will assist
students communicating and expressing their knowledge, as well as being in line
with the Principle of Engagement in the Theory of Universal Design for
Learning.
The first principle of UDL, ‘provide multiple means of representation”, help promote an inclusive learning environment on many levels. When developing a course and focusing on this principle, there are three guidelines to follow. They are:
Perception
Language and symbols
Building Knowledge
We are not going to take a deeper look.
The first guideline, Perception, in many ways overlaps with creating accessible content. When creating content, be sure that interaction is flexible and does not solely depend on one sense for its delivery. As you develop the material be sure that you can meet the following criteria:
The option to customize the display of information. By providing malleable content options in digital format that is accessible, you will be increasing the clarity and salience of information for a wide range of learners.
Alternatives to perceive information. A picture can stay 1000 words, but not if you cannot see it. These presentations can abandon those with visual disabilities. To ensure equitable access, offer non-visual learners alternatives such as closed captioning and transcripts. Also, consider visual graphics and infographics to assist learners who perform better visually than with text.
Represent a diversity of perspectives and identities in authentic ways. Learners need to see themselves, as well as others, represented in what they study. When students recognize their own experiences and cultures in course materials, it builds validation and belonging.
Meeting these criteria will reduce barriers to learning. Key information will be equally perceptible to all learners by:
providing the same information through different modalities, and
providing information in a format that will allow for adjustability by the user
Multiple representations not only ensure that information is accessible to learners with disabilities, but also easier to access for other learners from varying backgrounds.
Intelligent agents in Brightspace are not really “intelligent” or GenAI. Instead, they are rule-based automation tools that monitor learner activity and trigger targeted actions, such as: personalized feedback, or reminders. There are two key actions intelligent agents can do:
Change user roles (permissions) and (un)enroll users (Administrator level access required)
Instructors can email students alerts based on a triggered rule (Instructor level access)
Intelligent Agents as Instructional
Agents
Intelligent agents can help put teaching plans into action automatically so they can immediately reach students, keep them engaged, reduce repetitive tasks, and use course data to guide your teaching in online or hybrid classes. This seems like a lot, but essentially in Brightspace they offer actions that can be automated by conditional statements.
Create and Employ an Agent
You can create an Intelligent Agent by:
Going to Course Tools on the NavBar and selecting Course Admin
Scroll Down to the Communication tools and select “Intelligent Agents”
Select “New Agent”
The New Agent will have 4 features:
General: The Basics
Give the Agent a Name (Required)
Give the Agent a Description
Select a Category (Optional – you may need to make one using “Add Category”)
DO NOT Select “Agent is enabled. Only do this once the agent is ready to be deployed. You may want to test your agent first.
Scheduling: Do you want this to be something done daily or once?
NOTE: Student patience is fragile. Be careful not to overdo it!
Criteria: What triggers the action?
Who is affected by their roles:
It is best to choose all in the Classlist.
Using specific roles requires care. You could email other course instructors or librarians (folks with roles other than students).
Take Action or Activity
Select warnings for late log in activity by either:
Brightspace Log-on
Course log-in (this is best)
Release Conditions: This is a vast list of options. Some include:
Not posting in a discussion section
No Quiz Attempts
Scoring Below or above a number on a Quiz
Not visiting a content page
Action:
Occur only once or (caution) repeatedly
Send Email” select the box
Be sure to make the email informative.
OPTIONAL: Replacement Strings can personalize your message.
Save and Close
If you enabled the agent, it will run when scheduled. In addition, you can enable the agent from the list.
If you want to run it right now, select the agent’s chevron and select “Run now”.
What are Replacement Strings?
“Replacement strings” are bits of code entered into automated emails for personalization.
Use the following replacement string in the “To” address field to send the agent email to specific recipients: {InitiatingUser} – The user (student) who performs the actions necessary to satisfy the agent's criteria.
What replacement strings can
I use in the subject and message?
Here
are several recommended replacement strings to consider using:
{InitiatingUserFirstName} - The first name of the initiating user.
{InitiatingUserLastName} - The
last name of the initiating user.
{LastCourseAccessDate} - The date
the initiating user last accessed the course.
{LastLoginDate} - The date the
initiating user last logged in.
{OrgUnitStartDate} - The start
date of the course. (Access to the Brightspace course)
{OrgUnitEndDate} -The end date of
the course. (Access to the Brightspace course)
*Replacement strings are case sensitive! Be sure to use them exactly as they are
shown, else you could look like uncaring automaton or an idiot to the recipient.
*
I see that you
did not log into the you course, {OrgUnitName},
last week. I hope everything is okay.
If there is an issue, do not hesitate to contact me to see what we can
do. Please remember that regular participation in course activities is
essential for success in this course. You can get back on track by first
logging in to the course as soon as possible.
I see that
you did not log into the you course, PSY222-73 DEVELOPMENTAL PSYCHOLOGY, last
week. I hope everything is okay. If
there is an issue, do not hesitate to contact me to see what we can do. Please
remember that regular participation in course activities is essential for
success in this course. You can get back on track by first logging in to the
course as soon as possible.
Looking
forward to your return to the course,
Professor Wolf
Strategically Employed Intelligent Agents are Powerful
Using Intelligent Agents in conjunction with Conditional Releases can create powerful rule-based tools that can engage students, provide immediate feedback, and otherwise help add a more personal touch to your class.
For example, Intelligent Agents can:
Send reminders to students who have not logged in recently,
Congratulate learners who perform well on assignments, or
Provide additional resources when students struggle with course material (via email link).
These automated messages help maintain communication, encourage engagement, and support student success without requiring instructors to manually monitor every course interaction.
You know that short video increases student engagement,
however you do not have the finances or time to purchase complex video creation
software.Getting a video production
crew on a teacher’s salary is just not possible.How can one take advantage of video in their
online courses?
What if I told you that there is a tool that can easily
create short video clips for your online course, embed the clips, and
automatically generate closed captions? Ensuring that the experience is accessible, the
tool generates transcripts automatically.
How to use Video Note
Video Note can be accessed by using the “Insert Stuff” icon.
When selected you have to option to:
Record live using your web camera or
Upload a premade video.
Remember to keep the video short, or you will lose the
attention of the viewers.
Remember to give the video:
a name,
description,
select the video’s language and
select “Automatically generate captions from
audio”.
Select next to review and insert (or re-record).The video will be in embedding into the web
page. Video Note will even keep your video in your course – so there is no
commercial access or issues with social media!
There are so many uses! Video Note can be used in any editor
in Brightspace and is excellent for giving feedback when grading.Use it in the feedback section so students
will then be able to easily click on the video with one click when viewing
their grades – increasing their likeliness to review the feedback!
Other video editing tools and transcript tools can cost you
thousands of dollars. Video Note cost
nothing – and can be paid in four small payments of $0.
I only want Audio
What if you do not want video, but only want audio, can you
embed that with Video Note?Yes.
Whatever your reason, be it being an international spy or that you just want to
remain faceless, you can use Video Note to upload audio.Simply select the audio only feature or
upload the audio file, and Video Note can create an interactive player that
proves captioning and transcripts.
The three principles of Universal Design for Learning (version 3.0) each address specific aspects
of learning and how we process information.
They are:
Representation: which focuses
on recognition networks in the mind
Action and
Expression: which focuses strategic network in the mind
Engagement: which focuses
on affective networks in the mind
The first principle pertains to how we present information
to learner. Essentially, it is about what they are learning. To ensure
learning is most successful, offer a choice of multiple presentations of the
information.
People differ in the ways that they perceive and comprehend
information. How we present it to them matters. Besides sensory disabilities,
such as blindness or deafness, and various learning disabilities, there are
several varying factors that are associated with standard accessibility that
significantly affect individual learning. A few of these factors include:
Language differences
Cultural differences
Economic differences
Each of these may require different strategies to presenting
content to ensure student success. In this way a more inclusive approach would
accommodate all of these factors to offer an equal opportunity for
understanding.
Disregarding all of these factors, other learners may simply
acquire information faster through one means of presentation instead of
another, such as excelling at visual presentations instead of textual
information. For this reason having multiple representations of content
improves student success at learning. This allows students to make connections
between, and within, the content that improves learning and the transfer of
concepts. Thus the use of multiple representations of content is vital
for everyone to learn because there is not one optimal
representation for learning and the use of multiple representations allows the
students to better comprehend the material during the learning process.
There are three guidelines to follow when focusing on the
representation as of content. They are:
Perception
Language and Symbols
Building Knowledge (version 3.0)
Each of these guidelines, each with their own goals to meet,
ensure students have the best chance to recognize what they need to
learn. Meeting the Principle of Representation also contributes to
student inclusion, as it does not bar access to the content for any
group. This results in
overall student success and is just good practice in teaching.
AI company CEOs are claiming that artificial intelligence
will replace workers (Cutter & Zimmerman, 2025) based on the vast amount of
content quickly created by AI. However, faster does not necessarily entail
better.When one needs brain surgery, it
is probably not wise to go with the surgeon who claims to perform the procedure
faster than anyone else with no attention to the survivability rate.When stakes are high, we value accuracy. Sacrificing
a marginal amount of time becomes an acceptable trade.
Online learning took years of research to confirm its legitimacy,
and in 2009 the Department of Education confirmed that not only were online courses
comparable, but were in some cases better than, traditional courses (Means, et
al., 2009).Once the pandemic
necessitated a move to online instruction, a vast number of academics moving to
online instruction frequently resulted in best practices being ignored in favor
of speed by those new to the online modality (Farrell, 2022).Years later, the effects on online
instruction without proper instructional design is still not determined.
The introduction of AI provided tools has produced more AI
generated text than the combined output of human generated text since the Guttenberg
printing press (Vincent, 2021).This
vast amount of content is hawked as a good thing.However, quality isn’t measured in terabytes.
When writing computer programming code, AI code often contains bugs and
introduces security risks (Perry et al, 2023). Alarmingly, while programmers predicted that
AI tools can reduce their completion time by at least 20%, studies reveal the
tools slowed down completion by 19% (Becker, et al, 2025). This significant
difference illustrates that if one is enamored by a quick an easy tool it could
lead to a sacrifice in quality that will impede the end result. Simply having a
tool that can produce vast amount of content does not vouch for the quality of that
content.
How does this apply to online learning? Over twenty years of
research molded an online design approach that focuses on positive learning experiences
(Wasson & Kirschner, 2020) where courses are designed to be accessible to
all students, follow a Universal Design for Learning approach (Dell 2015), and focusing
on complex learning through engaging designs instead of merely presenting
content (Wasson & Kirschner, 2020). A few features that are expected in
these online designs include:
A focus on the learner
Prototyping designs
Designs that accommodate multiple learning strategies (Rose & Meyer, 2002)
Iterative development incorporating student feedback (Adnan & Rizhaupt, 2018)
Aligning learning outcomes to assessments (Ni She, et al, 2021)
Being able to develop online learning environments that
apply best practices defined by applied research in learning is critical for creating
courses that promote student success.While
AI may be able to quickly produce content, would it be able to create
discussion activities for adult learners that:
Promote active learning
Provide open-ended questions that explore and apply concepts
Encourage learners to apply their real-world experience to the content
Avoid soliciting facts that close off conversations
Apply scaffolds that ensure inclusive learning practices
With the vast growth of the AI industry, faculty access to
AI, and economic issues facing schools, it is quite possible that AI will quickly
provide shoddy content at the cost of the learners.
Case Study: Brightspace LUMI AI
LUMI is an AI tool available through D2L Brightspace that applies only the specific
content instructors provide while promising content privacy. Based on the Anthropic’s Claude architecture,
the tool can generate:
test questions,
discussion questions,
assignment ideas, and
module summaries.
This can be done quickly and relatively easily. Impressively,
users can even set the level of Bloom’s taxonomy for many of the outputs. Being
integrated within Brightspace allows for a common platform for a school to use
that will save money and training time.Its one-press button is also convenient for the faculty.
Will it replace developers and instructional designers?Like the claims of many selling AI tools, they
are exaggerated.When using AI to
develop questions for online discussions, I noticed a disturbing trend.The questions were similar to a new teacher
who has no knowledge of best practices in instructional design.
With each generated output, the discussion questions lacked
instructional design principles for online learning. Presumably developers will
edit the material and make necessary additions or changes.In reality, overworked instructors are not
incentivized to do so.And this is the
crux of the problem with AI.It
encourages the quick and easy solution and contributes to ignoring specialists.
AI slop is quick and easy; however, it does not promote student learning (Weller,
2024).
Below is a LUMI Pro AI training guide:
The Lesson
AI is a tool – not a
solution.If you are going to use AI,
be sure to edit and apply best practices in instructional design for
learning.For example, online
discussion questions should be written with:
Open ended questions
Providing follow-up questions and time for reflection
Linked to authentic life experiences
Encourage sharing references and promoting an academic conversation.
While there is nothing wrong with using AI to help inspire
you when developing courses, you will probably note that the best courses have
inspiring and engaging learning activities that are more than just a vague
question for a standard online forum. To be fair to LUMI, Brightspace has
designed it such that instructors must review/edit the generative results before
they are applied.
The AI Apocalypse - Wow?
Replacing experts with stochastic parrots is probably a
recipe for disaster.The hallmark of good
college is its instruction.AI is a tool
and it is important to not be enamored by its novelty.Instead, learn to work with it and know its
limitation. Be sure to vet all generative
AI material.Be warned:You may be like the programmers who think the
AI tools are increasing their speed, when in actuality the tool has become an albatross.
Since instructional design is a detailed field, it is prudent
to understand best practices in online course development to assist your
assessment of the AI content.Most
teaching and learning centers are filled with instructional designers who are
more than happy to share the knowledge with faculty.While the may dispel the razzle-dazzle of
some AI tools, it will contribute to developing courses that increase student success.
Perry, N, Srivatava, M, Kumar, D, and D, Boneh (2023) Do Users Write
More Insecure Code with AI Assistants?. In Proceedings of the 2023 ACM SIGSAC Conference on Computer and
Communications Security (CCS ’23), November 26–30, 2023, Copenhagen,
Denmark. ACM, New York, NY, USA.
Rose, D. & A. Meyer (2002). Teaching every
student in the digital age: universal design for learning. Alexandria, VA:
Association for Supervision and Curriculum Development.
When we teach, either online courses or in the classroom, gathering information for assessment is critical to improve what we do as educators. Assessment is one of the aspects that educators often don’t do well. Many times, course evaluation surveys are the extent of our attempts to assess whether we are meeting the courses goals. These surveys are distributed at the end of the course and if the instructor is lucky, the results may be available months later. This process neglects the needs of the instructor by not affording them the information they need to make corrections and improve in real time. Naturally, the students also suffer, as they will not benefit from real time corrections by the instructor.
The ADDIE model is a traditional instructional design methodology to help streamline the production of your course. The name is an acronym for the 5 steps of the model:
Analyze
Design
Develop
Implement
Evaluation
Evaluation is set at the end of the process, and while the process is supposed to be cyclical, often critiques of the process is that it is too time consuming. Models like Rapid Instruction Design (RID) or Agile emphasize including evaluation throughout the stage. Whether these critiques of the ADDIE model or if traditionally people have failed to apply the ADDIE model functionally at different levels is an interesting question, but will not directly help you improve you course now.
Micro-Feedback
Developing mechanisms to collect feedback throughout the course, or micro-feedback, and using it to improve your course on the fly can be very helpful. By including short surveys at the module level (or smaller), instead of just one large survey at the end of the course, instructors can gain valuable insight that can help them rapidly adapt to their students’ needs. This improvement will directly affect the students. Moreover, the adaptation can meet the specific needs of the students ad may vary the next time the course is taught.
Adopting a flexible and adaptive approach using micro-feedback gives you a greater understanding of your course. Surveys can be short, and can include some reflective feedback from the student to give you the information you need to both better meet their needs and improve student success. While it may seem difficult, adding a small (5 question) option survey can give you valuable insight on improving your courses. You may find that the information can help you by giving you insight that could streamline your instruction and reduce your work by making it more effective.