• Journal of Educational Research in Mathematics
• /
• v.19 no.1
• /
• pp.81-98
• /
• 2009

This study analyzed the types of quantitative reasoning and the characteristics of representation in order to figure out the characteristics of quantitative reasoning of the sixth graders. Three students who used quantitative reasoning in solving problems were interviewed in depth. Results showed that the three students used two types of quantitative reasoning, that is difference reasoning and multiplicative reasoning. They used qualitatively different quantitative reasoning, which had a great impact on their problem-solving strategy. Students used symbolic, linguistic and visual representations. Particularly, they used visual representations to represent quantities and relations between quantities included in the problem situation, and to deduce a new relation between quantities. This result implies that visual representation plays a prominent role in quantitative reasoning. This paper included several implications on quantitative reasoning and quantitative approach related to early algebra education.

• Journal of the Korean School Mathematics Society
• /
• v.25 no.4
• /
• pp.353-374
• /
• 2022

The study investigated students' instrumentalization levels and computer programming self-efficacy in mathematics classrooms while using Scratches, to understand the properties of equality. 32 of 7th-grade students from D middle school in Gyeonggi-do participated in the program consisting of 7 lesson units. To investigate individual students' levels of instrumentalization, each worksheet they worked on using Scratches was saved into computers after each lesson. Questionnaires measured self-efficacy regarding computer programming at the study's beginning and the end. The level of students' instrumentalization was revealed to be variously from level 0 to 4. In the beginning, 9% of students corresponded to level 3 or 4, but more than 80% of students reached level 3 or above at the end. In addition, computer programing self-efficacy was improved significantly.

• Journal of the Korean Chemical Society
• /
• v.62 no.4
• /
• pp.299-313
• /
• 2018

Inquiry-centered education is important in science education, but in the actual education field, scientific research is being done in a uniform manner due to realistic difficulties. In this study, we use RS (Reverse Science) as a secondary chemistry class to provide opportunities for students to engage in inquiry learning and scientific thinking through process-oriented activities. In this study, we developed and applied it to explore the effects on the scientific inquiry abilities of middle school students and checked the students' perception of it. For the application of the program, 128 students were selected from 6 classes of the 2nd grade in D district middle school, 64 from the experimental group and 64 from the comparative group. The experimental group taught RSP-based the chemistry inquiry programs and the comparative group taught instructor-led classes and verification experiments on the same topic over the seventh hour with three themes. In addition, we analyzed the results of the pre- and post-test by using the science inquiry ability test, and discussed the effects of the program based on the students' perceptions through class observation, student activity area, questionnaire and interview. As a result, the class using the program showed statistically significant changes in the science inquiry ability of secondary school students. Specifically, the experimental group was found to be significant in its prediction among the subcomponents of basic exploration ability compared to the comparative group. The differences have also been shown to be significant in terms of data translation, hypothesis setup and variable control, which are subcomponents of integrated exploration capabilities (p <. 05). In addition, students became interested in the process of creating the theory of science, and were highly interested in collaborating with their friends. It also provided students with opportunities to experience scientific thinking through process-oriented inquiry. Finally, based on the positive impact of the RSP-based chemistry inquiry program on students, we were able to identify the potential use of the program.

• The Journal of Korean Association of Computer Education
• /
• v.18 no.5
• /
• pp.55-62
• /
• 2015

Today, living in a software-centered global community. lots of countries are putting most efforts on breeding a creative manpower well equipped with problem-solving abilities based on computational thinking. Upon this colleges and universities where most strongly related to job activities are proceeding instruction related to programming for the IT majors realizing the importance of the software education. Hereby we intend to be of a proper help for every colleges and universities students who are working on educational programming design for the first time performing a research probing the relationship with the full gamut of computational thinking based on the result acquired through a phased survey showing the amount of difficulties at their beginning stages.

• Journal of the Korean School Mathematics Society
• /
• v.17 no.4
• /
• pp.657-677
• /
• 2014

The present qualitative case study explored the ways in which three middle school students constructed and refined their mathematical models and modeling processes, and factors that had influenced such refinement. The results suggest that students' modeling processes are non-sequential in that the participant students reformulated their initial problem from the real-world problem situation and revised the model when they could not get a satisfactory solution or the acquired solution did not make sense. Moreover, the students' model refinement processes were affected by the following four elements: the types of real-word problem situations, students' metacognitive thinking, communications between teachers and peers, and the role of teachers.

• 한국정보교육학회:학술대회논문집
• /
• 2004.08a
• /
• pp.370-380
• /
• 2004

정보화시대에 학생들에게 요구되는 가장 중요한 기술 중에 하나는 많은 양의 정보를 조작하는 능력으로, 데이터베이스는 이러한 기술을 가르치는데 이상적이다. 데이터베이스 기반 마인드 툴은 지식을 표현할 때 분석적이고 비판적인 사고를 한 수 있도록 하는 도구로 데이터베이스를 이용하는 것을 말한다. 데이터베이스는 많은 분야에서 사용이 되고 있지만 아직까지 교과교육에서 활용되는 사례는 많지 않으나 그 가능성은 무궁무진하다. 이 논문에서는 교과교육에서 데이터베이스 기반 마인드 틀을 사용할 수 있는 내용과 그 방안을 분석해보고 구체적으로 적용해 보고자한다.

• Communications of Mathematical Education
• /
• v.18 no.2 s.19
• /
• pp.321-340
• /
• 2004

본 연구에서는 van Hieles의 기하학 사고 수준에 따라, GSP(Geometer's SketchPad)를 활용한 초등기하 영재교육에 활용할 수 있는 프로그램을 구안하여, 구안된 프로그램을 제주대학교 부설 과학영재교육원 초등수학반 학생들에게 적용, 그 효과를 검증해봄으로써, GSP를 이용한 초등수학 영재 교육 프로그램의 개발과 활용 가능성을 연구하는데 그 목적이 있다.

• Communications of Mathematical Education
• /
• v.8
• /
• pp.231-245
• /
• 1999

본 연구는 중학교 1학년 함수 학습을 위해 패턴 활동으로 구성된 함수 지도 프로그램을 개발하고, 개발한 프로그램을 적용한 실험 집단(85명)과 교과서를 적용한 비교 집단(85명)간의 함수 학습에서의 효과를 분석하였다. 함수 지도 프로그램은 학생들이 패턴 활동을 동해 함수적 사고를 기르며, 활동적으로 수업에 참여하여 수학에 대한 자신감과 실생활의 연계성을 가질 수 있도록 구성하였으며, 적용 결과, 수학 수준별 수업을 하는 상반에서는 유의미한 차이를 보였고, 중반에서는 유의미한 차이는 없었으나 수업 시간에 흥미가 매우 높았다는 긍정적 평가를 할 수 있다.

• Journal of the Korean Chemical Society
• /
• v.52 no.4
• /
• pp.412-422
• /
• 2008

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2017.07a
• /
• pp.73-74
• /
• 2017

4차 산업혁명의 핵심 중 하나인 소프트웨어 교육에서 프로그래밍 교육은 필수적이다. 다양한 프로그래밍 언어 중 프로그래밍 입문자를 위해 적합한 언어를 선택하는 것은 매우 중요하다. 본 논문에서는 프로그래밍 입문을 위해 적합한 언어를 선택하기 위한 가이드를 제공하기 위해 2017학년도 1학기에 프로그래밍 입문 관련 교과목을 수강한 학생들을 대상으로 프로그래밍 언어에 대한 선호도를 조사하고 분석하여 언어 선택을 위한 가이드를 제안한다.