Longman Dictionary of

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cohesion
it is a series of sentences that develop a main idea (i.e. with a TOPIC SEN-
TENCE and supporting sentences which relate to it).
see also SCHEME, TEXT LINGUISTICS, CONVERSATIONAL MAXIM
cohesion n
the grammatical and/or lexical relationships between the different
elements of a text. This may be the relationship between different sentences
or between different parts of a sentence. For example:
a A:Is Jenny coming to the party?
B: Yes, she is.
There is a link between Jenny and she and also between is ... coming and
is.
b In the sentence:
If you are going to London, I can give you the address of a good hotel
there.
the link is between London and there (see ANAPHORA).
see also COHERENCE
cohort n
(in research) a group of people who have some feature in common, such
as age, IQ, or number of months they have studied a foreign language.
collaborative assessment n
a type of assessment that arrives at a consensus collaboratively among different
teachers teaching the same course regarding which common features
to assess in a learner’s response, product, or performance and how
consistently to use assessment criteria for this purpose.
collaborative evaluation n
(in language programme evaluation) the assessment and evaluation of a
curriculum or programme that is carried out jointly by classroom
teachers, researchers, or other trained educational experts.
collaborative learning n
a general term for an approach to teaching and learning which makes use
of learners working together in small groups. A form of collaborative
learning in which specific roles and responsibilities for group members
and for the use of group-based activities is known as COOPERATIVE
LEARNING.
collaborative research
(in teacher development programmes) research that is carried out by a
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