This research aims to develop problems, math story problems using subtraction, teach our students, grade 5 sample in the research include: student grade 5/2 school ban Huay September Takeda. Chaiyaphum semester 1 academic year 1 classroom number 2559 30 people which is derived from the simple random sampling. Tools used in this research is a set of teaching. Subtraction story problems 5th grade 4 Kit and with documentation, teaching kits and test achievement before and after lessons, you learn by teaching. Story problems plus grade 5 research built a number of 4-30 multiple-choice options, data analysis, computer programming, finished by finding the standard deviation, Find out the effectiveness of instructional series E_1 and E_2 using/testing (t – test) it was found that the.
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