Analysis of Communication and Mathematical Abstraction Ability of Junior High School Students’ using Student Activity Sheets Based on Model of Learning Mean – Ends Analysis

Student difficulties in understanding algebra particularly in factoring is because teachers have not been able to utilize manipulative objects (props) as a medium to narrow nature of mathematical abstraction itself. Props mathematics is a concrete object that can be manipulated, in order to bridge mathematical abstraction. Flip-flops and frond thatch are two things that will serve as a manipulative object in learning algebra. The purpose of this study are: (1) to describe the use of flip-flops and frond thatch as manipulative objects to enhance the ability algebra of junior high school students; and (2) To know the use of manipulative objects flip-flops and frond thatch will reach or not the ability algebra of junior high school reached an average of more than 65. This study is a quantitative study with experimental method. In this study there is only one group of research subjects derived from the 3 school level (low, medium, and high), the experimental group doing mathematics by using manipulative objects. To determine the ability of an algebraic increase to more than 65 will be used t-test. The result showed that the tcount ttable (5:44 1.67), so in this case H0 is rejected. Further in the learning process was also found that the students are very easy in factoring a quadratic equation by using the manipulative objects. The conclusions of this study are: (1) Learning with the use of flip-flops and sago palm frond as manipulative objects to the increased ability of algebra junior high school students has been going well and facilitate student. (2) Learning mathematics algebra material using props from the flip-flops and frond thatch can improve the understanding of junior high school eighth grade on the material algebra reaches an average (μ0) of more than 65.

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RELATIONSHIP BETWEEN MISCONCEPTION AND MATHEMATICAL ABSTRACTION OF GEOMETRY AT JUNIOR HIGH SCHOOL

Infinity Journal ◽

10.22460/infinity.v9i2.p213-222 ◽

2020 ◽

Vol 9 (2) ◽

pp. 213

Author(s):

Gida Kadarisma ◽

Nelly Fitriani ◽

Risma Amelia

Keyword(s):

High School ◽

High School Students ◽

Junior High School ◽

Junior High ◽

Junior High School Students ◽

Test Material ◽

School Students ◽

Level Of Abstraction ◽

Flat Side ◽

Mathematical Abstraction

This study aims to examine the misconceptions that often occur in junior high school students on the concept of geometry based on abstraction level. The research method is qualitative with a case study design. Subjects in this study are 27 students of the 3rd grade of junior high school students, who had to learn all the concepts that will be appeared on the test. Material that will be given on the test of this research is the concept of Triangle, Quadrilateral, Flat Side Geometry and Curved Side Geometry. This research takes a place at one of the junior high schools in Cimahi. The instrument in this study is a diagnostic test (to find out the types of students’ misconception), mathematical abstraction tests (to determine the level of abstraction) and interview rubrics. Misconceptions produced by students are closely related to students’ mathematical abstractions, the higher the level of abstraction ability, the more students away from misconceptions. The topic taken in this study is the topic of basic geometry, the results can be a source of information about the types of misconception that often occur in students, and how the solution so that these misconception do not re-occur.

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