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20 results on '"Quintero P"'

1. Visualizing Three-Dimensional Calculus Concepts: The Study of a Manipulative's Effectiveness

Author

McGee, Daniel, Moore-Russo, Deborah, Ebersole, Dennis, Lomen, David O., and Quintero, Maider Marin

Abstract

With the help of the National Science Foundation, the Department of Mathematics at the University of Puerto Rico in Mayaguez has developed a set of manipulatives to help students of science and engineering visualize concepts relating to points, surfaces, curves, contours, and vectors in three dimensions. This article will present the manipulatives that have been developed, describe how they have been used in multivariable calculus classes, and provide the results of initial studies on their effectiveness. (Contains 22 figures and 5 tables.)

Published
2012
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2. Children's Difficulties with Two-Step Word Problems.

Author

Quintero, Ana Helvia

Abstract

This study focused on analyzing children's difficulties with two-step mathematical word problems. Seventy-one fifth-grade children in Puerto Rico were individually observed solving five problems. Two of these were two-step problems; the remaining three were one-step problems with the same mathematical structures as the components of the two-step problems. Performance was significantly poorer on the two-step problems than on the one-step problems. Forty-eight (66.6%) children had difficulties with the two-step problems. The difficulties stemmed from different sources: lack of understanding of the concepts and relationships involved in the problem; incorrect strategy for working any word problem; using a single operation to solve two-step problems; and difficulties with a mismatch between order of presentation and order of operation. The implications for education of these results are briefly discussed. (Author/MNS)

Published
1984

3. The University of Puerto Rico's Partnership Project with Schools: A Case Study for the Analysis of School Improvement.

Author

Quintero, Ana Helvia

Abstract

Based on the premise that education is an open system interdependent with its environment, the University of Puerto Rico's Partnership Project with Schools is a cooperative program to improve public education by changing school practice. A collaborative seminar identified target areas: exploration of students' potential and difficulties, teacher development, curriculum reformation, and new organizational structures. (SK)

Published
1989

5. MARGINALIA. Jueves, 2 de Agosto de 1973.

Author

QUINTERO, LUISA A.

Subjects
SPEECHES, addresses, etc., HISPANIC Americans periodicals, PUBLISHED articles, PUERTO Rican Americans, INTERNATIONAL relations
Published
1973

7. Marginalia.

Author

Quintero, Luisa A.

Subjects
SPANISH language
Published
1980

8. MARGINALIA.

Author

QUINTERO, LUISA A.

Subjects
ANNOUNCEMENTS
Published
1978

9. MARGINALIA.

Author

QUINTERO, LUISA A.

Subjects
POWER (Social sciences), SOCIAL criticism, HISPANIC Americans periodicals, PUBLISHED articles, PUERTO Ricans, PUERTO Rican Americans
Published
1976

11. MARGINALIA. Lunes, 21 de Abril de 1975.

Author

QUINTERO, LUISA A. and de Lamadrid, Antonio Gil

Subjects
LIBERTY, PATRIOTISM, PUERTO Rican literature, PUERTO Rican authors, PUERTO Rican poetry
Published
1975

12. COSAS VEREDES….

Author

QUINTERO, LUISA A.

Subjects
TELEVISION, PUERTO Rican Americans, HISPANIC Americans in mass media
Published
1975

15. MARGINALIA. Miércoles, 4 de Julio de 1973.

Author

QUINTERO, LUISA A.

Subjects
ANTI-discrimination laws, HISPANIC Americans, HISPANIC Americans periodicals, PUBLISHED articles, PUERTO Rican Americans
Published
1973

16. Cosas Que Interesan.

Author

QUINTERO, LUISA A.

Subjects
EDUCATION, ORCHESTRA, PUERTO Rican Americans
Published
1972

17. MARGINALIA.

Author

QUINTERO, LUISA A.

Subjects
POOR children, ASSOCIATIONS, institutions, etc.
Published
1972

19. Puerto Rico: ¿Nación o Pueblo?

Author

OTERO, ELADIO RODRIGUEZ and QUINTERO, LUISA A.

Subjects
AUTONOMY & independence movements, PUERTO Rico-United States relations, PUERTO Ricans, PUERTO Rican Americans, HISPANIC Americans periodicals, PUBLISHED articles
Published
1971

20. MARGINALIA.

Author

QUINTERO, LUISA A.

Subjects
BEAUTY pageant contestants, HISPANIC Americans periodicals, PUBLISHED articles, PUERTO Rican Americans
Published
1970

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