Hi everyone, me again - and with more questions, too! Get a cup of
tea, this might take a while...
I thought it might be useful to share some of the research that we've
been doing in this area at the BBC. I know I was surprised by some of
the findings, and while many of you are probably very familiar with
this stuff, others might find it useful.
The first thing we looked at was curriculum theory. There are, it
turns out, several competing theories of curriculum design in the
world. By far the two most common are what I’ll call:
a) 'Learning Outcomes'
b) 'Syllabus'
In the English speaking (and parts of the developed) world, 'learning
outcomes' is currently much more common. In the rest of the world,
'syllabus' is.
So - is there a difference, and does it matter?
There is, and for the purposes of good metadata, it does.
'Learning outcomes'
‘Learning outcomes’ are statements of what students should be able to
do - and prove that they can do - after a learning experience.
Outcomes must be measurable and specific. The four UK national
curricula are outcomes-based, and the USA's 'learning standards' (e.g.
Common Core) are also learning outcomes. The LRMI term
'competency' (‘competency’ which is definable as ‘being able to do
something’) is too.
Learning outcome statements are verb-oriented (I’m not sure what the
grammatically correct term for that is!) Here are some examples of
learning outcomes:
e.g English National Curriculum, KS1, En1 Speaking (Sample)
1. To speak clearly, fluently and confidently to different people,
pupils should be taught to:
a. speak with clear diction and appropriate intonation
b. choose words with precision
c. organise what they say
d. focus on the main point(s)
e. include relevant detail
f. take into account the needs of their listeners.
e.g. Common Core State Standards, English Language Arts Standards »
Speaking & Listening » Grade 1 (sample)
SL.1.1. Participate in collaborative conversations with diverse
partners about grade 1 topics and texts with peers and adults in small
and larger groups.
SL1.2. Follow agreed-upon rules for discussions (e.g., listening to
others with care, speaking one at a time about the topics and texts
under discussion).
SL1.3. Build on others’ talk in conversations by responding to the
comments of others through multiple exchanges.
SL1.4. Ask questions to clear up any confusion about the topics and
texts under discussion.
‘Syllabus’
Syllabus is the model that many of us grew up with, and what most
people think of first when they think of a ‘curriculum’. A syllabus is
intrinsically content-oriented. The focus is on what students should
be taught, not what they should be able to do after they have been
taught (the ‘outcomes’). Fundamentally, a syllabus model is a list of
topics, sub-topics, and (where required) descriptions. It can be - but
does not have to be - hierarchical.
Syllabus statements are noun-oriented.
e.g. (I invented this one)
Science > Biology
Science > Biology > cell structure
Science > Biology > reproduction
Science > Biology > reproduction > asexual reproduction
or
Science > Biology > asexual reproduction
So what’s the problem?
Unfortunately, from an information modeling perspective, the ‘learning
outcomes’ curriculum model and the ‘syllabus’ curriculum model are not
actually compatible. For example, a student cannot demonstrate that
they can ‘cell structure’ because ‘cell structure’ isn’t an outcome in
itself.
How do these curriculum models work with what we know about teacher
and learner search behaviour?
We know that, faced with a search box like google’s (and that's what
we're designing for!), teachers and learners (well, all users really)
will search by keywords.
As evidence for this, here are the top 20 searches from
thegateway.org
(traffic = about 500 000 a month, I think) (This is cited from a post
on my blog from March -
http://www.memexblog.com/2012/03/what-are-our-teachers-looking-for/)
1. Social studies
2. Health
3. Math
4. Lesson plans
5. Career
6. Technology
7. Science
8. Reading
9. Spanish
10. Music
11. English
12. Marketing
13. Physical Education
14. Fractions
15. Grammar
16. Gravitational field strength
17. Poetry
18. Weather
19. Writing
20. Algebra
I’ve seen very similar results from
klascement.net (in Dutch), our own
results, and a couple of others too.
The thing worth noting here is that none of the dominant search
strings are learning outcomes. They might be terms that can be found
in outcomes, but they are not themselves outcomes. (A learner can’t
demonstrate their ability to ‘Poetry’ because ‘poetry’ is not an
outcome.)
It is also worth noting there are no verbs in these strings, where all
strings describing learning outcomes must by definition contain
verbs.
Learning outcomes must also, because they must be grammatically
complete sentences, be long. The longest search term in the top 20
here is three words, ‘gravitational field strength’, but all the
outcomes in the sample (which are representative of the NC) are 10+
words long.
So, even if the markup is accurately populated with complete outcomes,
matches between the (long) outcome and the (short) search term will be
a bit of a kludge.
I find it hard to imagine any teacher or learner ever searching on the
string ‘Build on others’ talk in conversations by responding to the
comments of others through multiple exchanges.’
This leads us to a strange and (to my mind) unexpected paradox - an
accurate description of a learning outcome does not equal a good
searchable string for those seeking to teach to the outcome.
This isn’t too surprising when assessed against the two curriculum
models - learning resources are made of content, and a syllabus model
is geared towards content. An outcomes model is not geared towards
content, it just uses content as a means to get to the outcome - so it
makes a bad match with searching.
Outcomes don't give good keywords, either.In our experience so far at
the BBC, learning outcomes as written in national curricula are either
very difficult or impossible to derive good keywords from (as the
person who had to try to do this with the four current UK national
curricula I’m quite confident in this assertion, but I’m happy to
discuss it if anyone wants clarification).
It is also worth noting that all the outcomes based curricula we’ve
seen are written in such a way that many, many resources could be used
to fulfil them - for the outcome ‘Build on others’ talk in
conversations by responding to the comments of others through multiple
exchanges’, the topic of conversation could be anything. Marking up a
given resource (be it about rabbits or the rainforest) as being
appropriate for this outcome would be accurate, but it would not
necessarily be useful.
There is good news, though!
The same source as provided the top twenty has recently introduced
subject (Maths, Science, etc.) filters, and they have been hugely
popular. So we know that educators really do value - and use -
semantic markup.
The question then becomes, if learning outcomes don’t create good/
easily seachable markup, then what does?
There are some clues in the top twenty that I think are worth
considering.
1. ‘Subject’ as a specific education-meaningful class (Maths, Science,
English etc). The evidence shows these to be very popular search terms
for educators. They are also ambiguous as non-semantic strings -
‘English’ the school subject is different from ‘English’ the language
(itself a viable subject in
schema.org 'Thing' markup) and ‘English’
the adjective, ‘Science’ the school subject is different from ‘Science
+fiction’. We think that this area is ripe for semantic markup, but as
importantly, we’ve come to the conclusion that the real-world
education-specific infrastructure of ‘subject’ is worth maintaining in
our data architecture: ‘schoolSubject’ is different from ‘subject’
because schoolSubject is a complete, domain-specific administrative
group, making it a homograph of but not a synonym with ‘subject-as-
topic’. Perhaps introducing ‘Discipline’ as a LRMI field, external to
the Thing schema’s ‘subject’, would be useful in reflecting this
division.
2. All the learning outcomes have one extraordinarily useful
attribute: they exist in the context of either a level (e.g. a Key
Stage) and/or a qualification (GCSE, SATs, NVQ, IELTS, UAI/HSC/VSCE if
you’re an Australian like me and so on). The outcomes themselves are
at their most meaningful within the context of the level/
qualification. As a searchable string, ‘GCSE’ will have a much higher
level of useable meaning than ‘16’ - especially given that the LRMI
has been arranged to collect ‘learning outcomes’ in the ‘competency’
field.
3. I’m sure we’ve all been glad to see the Common Core standards gain
traction, and I am especially glad to see them pick up on the ASN’s
work by introducing Official Identifiers. It’s almost inevitable that
standards worldwide will start to move towards machine readability,
and I think the LRMI is in an excellent position to anticipate and
facilitate that shift. If conjunction with ‘Qualification’, an
‘identifier’ field would make a huge impact on this (and would be, I
think, far more robust than full-text retyping of each outcome).
4. We’re very, very lucky - our user population is highly skilled.
Most of them will have a very good idea of what they want their
students to be able to do at the end of a learning experience, so the
weight of marking up by outcome is reduced for us. (I also note that
outcomes have turnover - they only last about five years before being
rewritten.) What we *can’t* predict is what content our teachers will
want to achieve those outcomes - rabbits or rainforests - but the good
news is, we don’t have to. Big, sweeping, real-world-reflecting
maximum-consensus fields will do almost all the work. It’s a very
fortunate position to be in and I certainly hope the LRMI exploits it.
I look forward to discussing these issues with you all.