Table (2): T-test Results for the Research Groups on the Equivalence Variable Variable Group Calculated T Value Experimental Control Mean SD Mean SD Intelligence 91.8 7.7 90.38 6.525 0.88 Previous Achievement 61 8.39 59.83 8.443 0.585 in Physics Age in Months 221.77 9.822 0.268 Previous Critical 48.4 3.7 47 4.05 1.52 Thinking It is from Table (2) that the calculated T values for the four equivalence variables are all below the tabulated t values at the adopted significance levels which is (2.000) at the level of Significance (0.05) and the Degree of freedom (69). This means there is no statistically significant difference between the two research groups on these variables. As such, the two groups are equivalent. Research Requirements To bring about the aims of the research and validate its hypotheses, the researcher prepared a number of requirements, and as follows: 1. Identifying the Teaching Material The teaching material has been identified to include Chapter One, Two and Three of the Prescribed Manual for teaching the subject "Teaching Aids" to 4th year students, Dept. of Physics, and as follows:
Table (2): T-test Results for the Research Groups on the Equivalence Variable Variable Group Calculated T Value Experimental Control Mean SD Mean SD Intelligence 91.8 7.7 90.38 6.525 0.88 Previous Achievement in Physics 61 8.39 59.83 8.443 0.585 Age in Months 221.77 9.822 0.268 Previous Critical Thinking 48.4 3.7 47 4.05 1.52 It is from Table (2) that the calculated T values for the four equivalence variables are all below the tabulated t values at the adopted significance levels which is (2.000) at the level of Significance (0.05) and the Degree of freedom (69). This means there is no statistically significant difference between the two research groups on these variables. As such, the two groups are equivalent. Research Requirements To bring about the aims of the research and validate its hypotheses, the researcher prepared a number of requirements, and as follows: 1. Identifying the Teaching Material The teaching material has been identified to include Chapter One, Two and Three of the Prescribed Manual for teaching the subject "Teaching Aids" to 4th year students, Dept. of Physics, and as follows:
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