Siriporn period [2546] to study the creation of a series of activities to promote math ability in problem solving and communication, mathematics for students in the first ratio and percentage. The sample was Khamcha High School students, 41 of whom have come from random sampling showed that the island group. A series of activities to promote math and problem-solving ability. Effectively communicate mathematical 86.03 / 76.54, which is higher than a predetermined threshold is 70/70 ability
to solve mathematical problems and the ability to communicate mathematics of students in the first set after using mathematical activity higher than before. Using a set of mathematical activity was statistically significant.
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