Classification and Practise of Various Type of Mathematical Problems
김진락 J . L . Kim
29(1) 16, 1990
김진락 J . L . Kim
DOI: JANT Vol.29(No.1) 16, 1990

A Note on ProblemSolving Strategies in Elementary School Mathematics
양인환 I . H . Yang
29(1) 716, 1990
양인환 I . H . Yang
DOI: JANT Vol.29(No.1) 716, 1990

Reinterpretation About Brownell's Meaning Theory in the Mathematics Education
이문은 M . E . Lee
29(1) 1719, 1990
이문은 M . E . Lee
DOI: JANT Vol.29(No.1) 1719, 1990

A Study on the Teaching of Estimation of Error Correcting in Computation by Means of Computer or Calculator
강시중 S . J . Kang
29(1) 2134, 1990
강시중 S . J . Kang
DOI: JANT Vol.29(No.1) 2134, 1990
This is a study on an instruction of estimation for error correction in the calculation with a computer or a calculator. The aim of this study is to survey a new aspect of calculation teaching and the teaching strategy of estimation and finally to frame a new curriculum model of estimation instruction. This research required a year and the outcomes of the research can be listed as follows : 1. Social utilities of estimation were made clear, and a new trend of calculation teaching related to estimation instruction was shown. 2. The definition of estimation was given and actual examples of conducting an estimation among pupils in lower grades were given for them to have abundant experiences. 3. The ways of finding estimating values in fraction and decimal fraction were presented for the pupils to be able to conduct an estimation. 4. The following contents were given as a basic strategy for estimation. 1) Frontend strategy 2) Clustering strategy 3) Rounding strategy 4) Compatible numbers strategy 5) Special numbers strategy 5. In an instruction of estimation the meaning, method, and process of calculation and calculating algorithm were reviewed for the cultivation of children`s creativity through promoting their basic skill, mathematical thinking and problemsolving ability. 6. The following contents were also covered as an estimation strategy for measurement. 1) Calculating the sense of quantity on the size of unit. 2) Estimating the total quantity by frequent repetition of unit quantity. 3) Estimating the length and the volume by weighing. 4) Estimating unknown quantity based on the quality already known. 5) Estimating the area by means of equivalent area transformation. 7. The ways of instructing mental computation were presented. 8. Reviews were made on the curricular and the textbook contents concerning estimation instructions both in Korea and Japan, and a new model of curriculum was devised with reference to estimation instruction data of the United States.

On the Mathematical Truth
전재석 J . S . Jeon
29(1) 3537, 1990
전재석 J . S . Jeon
DOI: JANT Vol.29(No.1) 3537, 1990

A Proof by Figure : 1 + 4 + 8 + 12 +…+ 4n = n2 + ( n + 1 )2
김희식 , 허창규 H . S . Kim , C . H . Huh
29(1) 3939, 1990
김희식 , 허창규 H . S . Kim , C . H . Huh
DOI: JANT Vol.29(No.1) 3939, 1990

On Common Fixed Points of expansive Mappings
강신민 , 박배훈 Sin Min Kang , Bae Hun Park
29(1) 4145, 1990
강신민 , 박배훈 Sin Min Kang , Bae Hun Park
DOI: JANT Vol.29(No.1) 4145, 1990
S. Z. Wang, B. Y. Li, Z. M. Gao and K. Ise´ki proved some fixed point theorems on expansion mappings, which correspond some contractive mappings. In a recent paper, B. E. Rhoades generalized the results for pairs of mappings. In this paper, we obtain the following theorem, which generalizes the result of B. E. Rhoades. THEOREM. Let A, B, S and T be mappings from a complete metric space (X, d) into itself satisfying the following conditions: (1) φ(d(Ax, By)) > d(Sx, Ty) holds for all x and y in X, where φ : R^+ → R+ is nondecreasing, uppersemicontinuous and φ(t) < t for each t >0, (2) A and B are subjective, (3) one of A, B, S and T is continuous, and (4) the pairs A, S and B, T are compatible. Then A, B, S and T have a unique common fixed point in X.

Central Simple Algebras and Invariant Polynomials
정운갑 Woon Gab Jeong
29(1) 4748, 1990
정운갑 Woon Gab Jeong
DOI: JANT Vol.29(No.1) 4748, 1990

A Test for Distributivity Using Tables
김희식 , 류선미 Hee Sik Kim , Sun Mi Roo
29(1) 4950, 1990
김희식 , 류선미 Hee Sik Kim , Sun Mi Roo
DOI: JANT Vol.29(No.1) 4950, 1990

Some Simple Mathematical Models of Life
S . D . Bajpal
29(1) 5154, 1990
S . D . Bajpal
DOI: JANT Vol.29(No.1) 5154, 1990

A Generalization of Abel's Theorem on Power Series
W . H Hsiang
29(1) 5561, 1990
W . H Hsiang
DOI: JANT Vol.29(No.1) 5561, 1990

Vertical Lift of Vector Fields to the Frame Bundle
A . K . Mishra , R . N . Singh
29(1) 6368, 1990
A . K . Mishra , R . N . Singh
DOI: JANT Vol.29(No.1) 6368, 1990
Let M be a differentiable manifold, TM its tangent bundle and FM its frame bundle. The theory of complete lifts and Horizontal lifts to FM of vector fields on M ahs been studied by many authors. In this paper, vertical lifts of functions vector fields and 1forms on M to FM are studied.

Some Comments on Teaching of statistics in the Department of Mathematics
Hardeo Sahai
29(1) 6971, 1990
Hardeo Sahai
DOI: JANT Vol.29(No.1) 6971, 1990

Report of 1990 Meeting of the Council Members of the K . S . M . E .
학회자료
29(1) 7374, 1990
학회자료
DOI: JANT Vol.29(No.1) 7374, 1990

A Study on Estimations of Parameters with the True Score Distributions upon Variations Between the Old and New Test Scores
홍석강 S . G . Hong
29(1) 7993, 1990
홍석강 S . G . Hong
DOI: JANT Vol.29(No.1) 7993, 1990

1990 International Mathematical Olympiad
박한식 , 최영한 H . S . Park , Y . H . Choe
29(1) 95108, 1990
박한식 , 최영한 H . S . Park , Y . H . Choe
DOI: JANT Vol.29(No.1) 95108, 1990

Influence of the Computers on Curriculum of Mathematics
류희찬 H . C . Lew
29(1) 109115, 1990
류희찬 H . C . Lew
DOI: JANT Vol.29(No.1) 109115, 1990

A Proposal for the Utilization of StudyAid Materials of Primary School Mathematics
정창현 , 양인환 , 양순렬 , 신성균 C . H . Chung , I . H . Yang , S . Y . Yang , S . K . Sin
29(1) 117139, 1990
정창현 , 양인환 , 양순렬 , 신성균 C . H . Chung , I . H . Yang , S . Y . Yang , S . K . Sin
DOI: JANT Vol.29(No.1) 117139, 1990

A RadonNikodym Derivative of the Product Measure
김병무 Byung Moo Kim
29(1) 141143, 1990
김병무 Byung Moo Kim
DOI: JANT Vol.29(No.1) 141143, 1990

1991 National Meeting of mathematical Education
김병무 Byung Moo Kim
29(1) 145146, 1990
김병무 Byung Moo Kim
DOI: JANT Vol.29(No.1) 145146, 1990

SEVENTH INTERNATIONAL CONGRESS ON MATHEMATICAL EDUCATION QUEBEC , CANADA
학회자료
29(1) 147148, 1990
학회자료
DOI: JANT Vol.29(No.1) 147148, 1990
