lintong
ABSTRACT
topic
SMAN
carried
questionaire
SID
MODULE
environmental
feasible
through
CHANGES
learning
valid
explained
OF
based
novanti
type
aimed
they
BASED
proces
4123342019
change
standarization
high
keyword
recycling
iii
good
processe
INVESTIGATION
thesi
conservation
subtopic
biology
development
study
DEVELOPING
teacher
teaching
waste
expert
tri
obtained
situmorang
response
pertiwi
consist
student
group
material
making
senior
GROUP
nihuta
use
mean
agree
media
ON
damage
conducted
ENVIRONMENTAL
module
school
out
investigation