Variable (X)

B

Beta (β)

Nilai-t

Sig.-t

R2

Contributions (%)

General content

0.258

0.239

6.005

0.000

0.154

15.40

Instructional materials

0.123

0.126

3.109

0.002

0.168

1.40

Learning materials

0.093

0.097

2.482

0.013

0.172

0.40

Constant

1.916

16.432

0.000