Table 3.

Pre-test grouping situation of SA.

Pre-test SA	Group	Post-test (3D-GT)
		N	M	SD	Levene statistic	Sig.
High-ability	Control	22	36.50	9.927	1.585	0.168
	Experimental 1	24	42.38	9.659
	Experimental 2	25	44.04	11.735
	Total	71	41.14	10.850
Low-ability	Control	26	30.65	8.010
	Experimental 1	25	36.52	8.432
	Experimental 2	24	35.13	7.255
	Total	75	34.04	8.221