module with a valid CTL approach was feasible in
the field test (Suastika and Tri Wahyuningtyas,
2018). Mathematics modules with previous valid
criteria had also been developed on the addition and
subtraction topics of integers (Wahyuningtyas and
Shinta, 2017), Fractions (Suastika and
Wahyuningtyas, 2018) and circles and spheres
(Yunita, 2016).
The fourth stage is disseminate, space geometry
module by CTL approach which trial in 5th grade
students of Malang. Based on observation result of
teacher activity obtained 85,71% with good
category, it showed that teacher able to manage
learning well. While the results of students’ activity
observation obtained 97.14% with good category, it
showed the students active in the use of space
geometry module by CTL approach.
Through the CTL approach, the actively of
primary school students in learning mathematics was
increasing (Haryoto and Narimo, 2013; Selvianiresa
and Prabawanto, 2017). Mathematics learning
becomes effective with the use of space geometry
module by contextual approach. The effectiveness of
learning through previous contextual approaches had
been applied to reading lessons (Kulaç and Walters,
2016; Mediha and Enisa, 2014), literature (Ates et
al., 2014). Through the use of space geometry
module, students’ understanding was increasing.
This was obtained from the increase of students’
learning result test that was 77.33% to 97.33%.
Previously, the use of mathematics module by CTL
approach on integer material could also improve
students' understanding (Wahyuningtyas and Shinta,
2017).
4 CONCLUSIONS
The space geometry module by CTL approach that
had been developed proved feasible to be applied in
primary school. This was evidenced based on the
results of expert validation on the module format
aspect, the contents of the module, discussion, and
illustration got an average of 0.82 were categorized
very valid. With the use of space geometry module
by CTL approach the students were more active in
learning and students' understanding increased by
20% based on students’ learning test result. Some
things that still need to be developed in the learning
module for primary school students are developing
modules with other topics as well as with different
learning approaches. Acknowledgments are
submitted to Kemenristek DIKTI who had funded
this research.
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