The results were as follows: 1) were aware of educational issues. The surface area and volume of students in the third, using a supplementary skills. 2) achievement in mathematics. The surface area and volume for students at three schools Bee Creek Pitaya before and after learning. Skill Practice using different statistical level of significance. 01, considering the average of the achievement that the student (x ̅ = 20.40) than the previous (x. ̅ = 10.56)
Summary of Skills of surface area and volume. Mathayom 3 powerful right should encourage teachers to use in the next instruction.
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