Craig Refugio

Craig Refugio
Negros Oriental State University · Graduate School, College of Education, Math Department & College of Engineering & Architecture

BSci-Math; MA-Math Ed; & PhD-Research & Evaluation

About

92
Publications
903,007
Reads
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78
Citations
Citations since 2016
76 Research Items
78 Citations
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Introduction
Craig N. Refugio, BS-Math, MA-Math Ed, PhD-Research & Evaluation, Associate Professor V Negros Oriental State University Dumaguete City, Philippines Research Interest: Math Education; Statistics Education; Assessment of Learning; Teaching & Learning; Policy Formulation
Additional affiliations
June 2013 - present
Negros Oriental State University
Position
  • Professor (Associate)
November 2011 - June 2015
Negros Oriental State University
Position
  • Faculty Member
Description
  • Teaches statistics, math, research methods. assessment of learning and wvaluation procedures at the undergraduate and graduate levels
August 2007 - July 2011
Prince Georges Public Schools
Position
  • Math Teacher
Description
  • Taught senior high school math.
Education
April 2000 - March 2004
University of San Carlos (Philippines)
Field of study
  • Research & Evaluation

Publications

Publications (92)
Poster
Full-text available
INTERNATIONAL RESEARCH CONFERENCE FOR MATH
Article
Full-text available
The world is changing really fast. This speed is caused by urbanization, technological development and the increasing demand for energy. Such changes have a direct impact on enterprises which function in the world of VUCA (volatility, uncertainty, complexity and ambiguity) with numerous surprises in the form of “black swans”, i.e. rare and unpredic...
Article
Full-text available
The researchers designed and conducted this study using the predictive analytics to determine the different science performance predictors of the first batch of K to 12 curriculum in Valencia District, Valencia, Negros Oriental. The researchers had chosen three kinds of predictors namely; student-related predictors, teacher-related predictors, and...
Conference Paper
Full-text available
Online learning is getting popular among students at a rapid pace. From the year 2002 to 2014, the number of online learners more than tripled, from 1.6 million to 5.8 million in the United States. The popularity of online learning is attributed mostly to the flexibility it provides for learners and the convenience of not having to commute or trave...
Article
Full-text available
Demonstrating knowledge of content requires teachers to display extensive knowledge of the critical concepts in the discipline. This study was set up to provide a research-based landscape of the content knowledge level of elementary mathematics teachers viewed in the local district of Ayungon in the Division of Negros Oriental, Philippines. Survey...
Article
Full-text available
The study investigated the difficulties encountered by Grade 11 teachers in teaching Senior High School General Mathematics, the reasons for the problems, and the strategies employed by teachers in overcoming the challenges with an end view of developing training design. The sequential explanatory mixed methods design was used in the study with the...
Conference Paper
Full-text available
Online learning is getting popular among students at a rapid pace. From the year 2002 to 2014, the number of online learners more than tripled, from 1.6 million to 5.8 million in the United States. The popularity of online learning is attributed mostly to the flexibility it provides for learners and the convenience of not having to commute or trave...
Presentation
Full-text available
Malunggay (Moringa Oleifera) has many health benefits based on national and international research findings but none so far has conducted an investigation on its mathematical & statistical properties, thus this study was conceptualized. One thousand five hundred samples were examined and revealed the following: Trichotomy & reflexive properties bet...
Article
Full-text available
The investigation attempted to find out the competence evidence among the grade 9 mathematics teachers in the secondary schools of Dumaguete City, Philippines. Survey and correlational methods of research were employed with the aid of questionnaire-checklist to profile the teachers’ number of years in teaching Mathematics, training and seminars att...
Thesis
Full-text available
Solar energy is one such renewable resource, and nature harnesses it through the process of photosynthesis (Martsinovich, Natalia 2016). This project is conducted to help clean the environment, specifically swimming pools, using renewable energy, the sun, as a more efficient power source. Robotic pool skimmers are robots that help in cleaning swimm...
Article
Full-text available
The world is shrinking now more than ever due to new scientific and technological breakthroughs that expand the boundaries of human knowledge, resulting in improvements to include the following: transportation, communication, space exploration, and educational technologies. Today’s students will compete in a technological, diverse, multi-cultural w...
Thesis
Full-text available
In our experiment, we looked for a way to harness wind energy as a replacement or at least an alternative for electricity as a source of power/energy in powering ventilation systems in kitchens called exhaust hoods. The researchers brainstormed about the idea and visualize the design with the use of Computer Aided Drafting (CAD). After visualizing...
Thesis
Full-text available
The treadle-powered charger is a charger designed to be a source of power for cellular phones or smartphones. This was based on Faraday’s Law, which states that a change in magnetic field produces an apparent flow of electric current. The researchers decided to change the hand crank of the hand crank phone charger with the treadle as a source of me...
Thesis
Full-text available
This technical research attempts to improve the electrical source of every household by substituting the Hybrid Solar Wind Turbine which can be used as a service back-up or as a main source of electricity. To achieve our main objective, we designed a system that can harness the clean energy provided by nature and identify the limitations of buildin...
Method
Full-text available
LESSON PLAN IN Probability of Simple Events
Method
Full-text available
A LESSON PLAN ON “Circle and Its Parts or the Terms Related To It”
Method
Full-text available
Measures of Position (Quartile)
Thesis
Full-text available
Two way powered solar streetlights uses ATS (Automatic Transfer Switch) to automatically transfer the power source from the battery to the gridline and vise-versa. When an electric utility outage occurs, the ATS will tell the backup power from the solar panel to start. Once the ATS sees that the backup power is ready to provide electric power, the...
Method
Full-text available
A DETAILED LESSON PLAN FOR Quartiles OF Ungrouped Data
Method
Full-text available
Lesson Plan for Law of Cosines
Method
Full-text available
Lesson Plan for Mean of Ungrouped Data
Article
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lesson Plan for Solving an Unknown Side of Triangle Using Pythagorean Theorem
Method
Full-text available
Lesson Plan for Independent & Dependent Events
Method
Full-text available
Lesson Plan for Pythagorean Theorem
Method
Full-text available
Lesson Plan for Deciles of Grouped Data
Method
Full-text available
LESSON PLAN for Basic Concepts of Probability
Article
Full-text available
Science and engineering departments face high student attrition due to perceived difficulty of courses in these disciplines. To subdue student attrition, students need to be guided by individual tutors to help them learn, practice and test their understanding of concepts. However, due to the exorbitant cost and time involved, this is not practical....
Method
Full-text available
Lesson Plan for Percentiles on Grouped Data
Article
Full-text available
Science and engineering departments face high student attrition due to perceived difficulty of courses in these disciplines. To subdue student attrition, students need to be guided by individual tutors to help them learn, practice and test their understanding of concepts. However, due to the exorbitant cost and time involved, this is not practical....
Conference Paper
Full-text available
Solving a multitude of today's global challenges takes and needs rapid advances in Science, Technology, Engineering, Arts and Humanities, and Mathematics (STEAM) disciplines. The world is looking for ever more scientists and engineers skilled at their profession. In reality, however, due to perceived difficulty of these subjects and frustrations in...
Research
Full-text available
Based on the results the p-value is 0.09, we accept Ho (null hypothesis); therefore at the 5% level of significance, there is not enough evidence to reject the claim that there is no significant difference between the midterm exam scores of 13 section A and 13 section B students in Principles of Teaching 1 subject.
Research
Full-text available
The result of the study from 10 random students of Negros Oriental State University is that there is no significant difference of students' preference for one type of flavoured drink over others since P-value = 0.67 is greater than the alpha or the level of significance. We can say that through this study most students preferred Coca-cola flavoured...
Research
Full-text available
Based on the results and interpretation, the p-value is less than alpha level of significance, since the claim is Ha, we should reject the Null Hypothesis. We can say that there is a difference between the two paintings (the Stary Night, and the Landscape with Green Corn) in terms of quality.
Research
Full-text available
Since the p-value is 7.79 which is greater than the level of significance I accepted H o which means that there is no significant difference between the amount of money between males and females in using or renting a computer in an internet café in a day.
Research
Full-text available
Since P-value = 0.003 is less than the level of significance (a)= 0.05 we rejected Ho. The median of the differences between the paired observations is statistically significant different from 0. The Wilcoxon test (for males and females) ranks the absolute values of the differences between the paired observations in the two groups of students and c...
Thesis
Full-text available
Identifying our students as visual, auditory, or kinesthetic learners, and aligning our overall curriculum with these learning styles, will prove to be beneficial for our entire classroom. Allowing students to access informations in terms of what they are comfortable with will increase their academic confidence. By understanding what kind of learne...
Conference Paper
Full-text available
Research
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Researches of the NORSU Main Campus 1 College of Education Students and Faculty
Research
Full-text available
NORSU MAIN CAMPUS 1 COLLEGE OF EDUCATION RESEARCHES
Presentation
Full-text available
This workshop intends to present the capability of the TI 84 plus in: solving equations in one variable; solving quadratic equations; drawing families of graphs; finding maxima, minima and zeros of functions; verifying trigonometric identity; solving exponential and logarithmic equations; and finding determinants and inverses as well performing ope...
Data
This paper presents how a graduate statistics course is being taught using SPSS in an ordinary state university classroom. A pretest was given before the teaching-learning process was conducted. Data analysis and interpretation were the main focus and the respondents were first taught about appropriate research design and data collection as well as...
Technical Report
Full-text available
Not all the waste disposed was transported in landfill. Most garbage was thrown in the rivers. During the rainy season, this can clog drainage system causing river to overflow thus result to floods. For that reason we are making an efficient waterwheel garbage collector to collect this garbage. A boat will be attached by a conveyor and a waterwheel...
Technical Report
Full-text available
In most rural areas farmers have limited access to water and electricity. For all households there is need for continuous supply of electricity and water. In our study we have discovered that the device which is the spiral tube water wheel pump is one of the devices capable of tackling such problems. With the use of the said device, which has no ha...
Thesis
Full-text available
Rationale of the Study Institutions of higher learning across the nation are responding to political, economic, social and technological pressures to be more responsive to students' needs and more concerned about how well students are prepared to assume future societal roles. Smith (2006) explains that over half of the students in public schools ar...
Poster
Full-text available
Using ABCalc in Basic Statistics Class
Preprint
Full-text available
In this paper, I investigated the different Geometry teachers' teaching practices in a culturally diverse Geometry classes in the Science and Technology (S&T) curriculum of Prince George's County Public Schools (PGCPS), Maryland USA and established relationship towards Geometry achievement. Six Geometry classes participated in this study and these...
Thesis
Full-text available
ABSTRACT The ocean is all around us. It is a large body of water that dominates the total percent of water volume in the world. It is the lifeblood of the planet and humankind but no one could consume it directly for everyday use as an alternative source of potable drinking water. On the first place, this is because of the amount of salt present i...
Article
Full-text available
The intention of this study is to determine the latent factors that affect the extent of using innovations among public and private mathematics teachers in the division of Dumaguete City using exploratory factor analysis. Female respondents constitute 75.17% (109) of the respondents while 24.83% (36) of the respondents were males. This showed that...
Article
Full-text available
This study sought to empirically find out the: a) sources of self-efficacy beliefs; b) levels of self-efficacy; c) behavior patterns; d) basic statistics performance levels; and established relationships of these variables. Descriptive type of research through survey method was employed and a researcher made instrument was developed through Wood &...
Thesis
Full-text available
This study aimed to investigate the predictors of the Licensure Examination for Teachers (LET) among the 2003 Bachelor of Secondary Education (BSE) graduates of Jose Rizal Memorial State College (JRMSC) System, Zamboanga del Norte with an endview of developing a regression model for predicting ratings in the LET. Specifically, this study sought to...
Conference Paper
Full-text available
The primary outcomes of any statistics course are towards statistical literacy, statistical reasoning and statistical thinking. It is in the aforementioned statement that this study was anchored. The levels of statistical literacy, statistical reasoning and statistical thinking were determined among the 106 introductory statistics students of the f...