Abstract:The ability to think strategically in the 21st century is the ability to think spatially. This research was conducted to determine the effect of the SAS Planet-assisted Problem Based Learning model on students' spatial thinking skills. The research uses a posttest only control group design. The research subjects included two classes, namely XI IPS A as the experimental class and X IPS B as the control class. The research instrument used essay tests on spatial thinking skills. Research data in the form of avera… Show more
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