Abstract
:
This research
aims to
developing STEM
-
AR
-
based e
-
book teaching materials to
improve students' scientific re
asoning in ecology and biodiversity materials. The
dev
elopment of this researc
h
is
important as a parameter of 21st
-
century abilities, which
require students to have 4C abilities to face the education era of 4.0.
This research method
uses Research and Deve
lopment
(R&D)
. T
he R&D design chosen was Thiagarajan design
consisting
of
four
sta
g
es
(
Define, Design, Develop, and Disseminate)
(Thiagarajan, 1974)
.
Class VII students (N = 42)
were involved as research subjects who were taken by th
e
purposive sampling technique. Data collection was carried out through scientific reasoning
tests, student response q
u
estionnaires, and observ
a
tion sheets. Data processing techniques
used paired samp
le T
-
tests and then performed the N
-
gain test. The results of the analysis
show that after using the STEM
-
AR
-
based e
-
book, there is an increase in scientific reasoning
abilit
y
, with an N
-
Gain value o
f
63% in the medium category. Testing the effectiveness o
f
teaching materials using the SPSS paired sample t
-
test
showed a result of 0.001, which means
that STEM
-
AR
-
based teaching materials affect students' scientific reasoning. Th
e
descriptive
average of
s
cientific reasoning has increased by 40%. In addition, s
tudents gave positive
responses to teaching materials, which made it easier to understand the material.
Keywords:
E
-
book
development;
Scientific Reasoning;
STEM
-
AR;
Teaching m
at
erial
;
21
st
-
century skill
Link artikel : berkas-20250814103639.pdf