There
are
different
principles
that
teachers
should
take
into
account
when
evaluating
.
For
instance
,
the
instructor
must
be
clear
about
the
____________________
of
evaluation
.
Furthermore
,
a
variety
of
evaluation
____________________
should
be
used
since
it
is
not
possible
to
evaluate
all
the
aspects
of
achievement
with
only
one
evaluation
technique
.
In
addition
,
teachers
should
know
about
the
strengths
and
____________________
of
the
techniques
.
Finally
,
to
have
credible
evaluations
,
teachers
should
be
____________________
when
assessing
students
.
There
are
two
other
important
concepts
that
will
be
discussed
in
this
class
;
they
are
validity
and
reliability
.
Validity
refers
to
the
____________________
of
your
measurement
;
that
is
to
say
,
it
____________________
what
it's
supposed
to
measure
.
On
the
other
hand
,
reliability
focuses
on
____________________
____________________
.
