Carol Heaverlo - Academia.edu (original) (raw)
Papers by Carol Heaverlo
For girls there is a distinct loss in interest, lack of confidence, and decline in positive attit... more For girls there is a distinct loss in interest, lack of confidence, and decline in positive attitudes toward STEM subject areas that begins early on in their academic experience and increases with age. According to the National Academy of Engineering, students need to begin associating the possibilities in STEM fields with the need for creativity and real world problem solving skills. Recent research has focused on the necessity of emphasizing the use of creativity and design in attracting girls to STEM academic and career fields. Many extra and after school activities (e.g., State Science Fair, math club, environmental club), provide girls with experiential learning that incorporates problem solving and/or creativity and design skills as well as providing investigative opportunities into academic areas that may not be part of the regular school day. Through hierarchical regression analyses, this study examined the extent to which middle and high school girls' (n = 915) age, and interest and confidence in a) problem solving and b) creativity and design predicted their interest in four STEM subject areas. A follow up analysis identified the extracurricular activities in which girls with higher interests in problem solving and creativity and design were involved. Results revealed that interest in problem solving was a positive predictor for interest in all four STEM subject areas; whereas, interest in creativity and design was a positive predictor for interest in computers and engineering, but a negative predictor for interest in science.
Weed Technology, 2002
ABSTRACT Epicuticular wax is a major barrier to the movement of foliar-applied herbicides into pl... more ABSTRACT Epicuticular wax is a major barrier to the movement of foliar-applied herbicides into plant leaves. Many researchers have evaluated the penetration of herbicides in plants using similar methods. However, the methods used to remove unabsorbed herbicide from the leaf surface have been inconsistent among scientists. Laboratory experiments were conducted to evaluate the effectiveness of various compounds as a leaf wash for removing unabsorbed C-14-labeled herbicides from shattercane and velvetleaf leaves. Product B and Product C provided poor results as a leaf wash compared with water, chloroform, methanol, and Product A. Product A increased the amount of C-14-bentazon removed from velvetleaf by 26% compared with the amount removed by chloroform, methanol, or water. Removal of C-14-nicosulfuron was not different between chloroform, Product A, methanol, or water. Although water was the best treatment for the two salts of C-14-glyphosate, Product A was as good or better than chloroform and methanol.
Journal of Women and Minorities in Science and Engineering, 2013
Bronfenbrenner's bioecological model of human development, several factors were hypothesized as h... more Bronfenbrenner's bioecological model of human development, several factors were hypothesized as having an impact on girls' STEM development; specifically, the macrosystems of region of residence and race/ethnicity, and the microsystems of extracurricular STEM involvement, family STEM influence, and math/science teacher influence. Hierarchical regression analysis results indicated that extracurricular STEM involvement and math teacher influence were statistically significant predictors for 6th-12th grade girls' interest and confidence in math. Furthermore, hierarchical regression analysis results indicated that the only significant predictor for 6th-12th grade girls' interest and confidence in science was science teacher influence. This study provides new knowledge about the factors that impact girls' STEM development. Results can be used to inform and guide educators, administrators, and policymakers in developing programs and policy that support and encourage the STEM development of 6th-12th grade girls.
For girls there is a distinct loss in interest, lack of confidence, and decline in positive attit... more For girls there is a distinct loss in interest, lack of confidence, and decline in positive attitudes toward STEM subject areas that begins early on in their academic experience and increases with age. According to the National Academy of Engineering, students need to begin associating the possibilities in STEM fields with the need for creativity and real world problem solving skills. Recent research has focused on the necessity of emphasizing the use of creativity and design in attracting girls to STEM academic and career fields. Many extra and after school activities (e.g., State Science Fair, math club, environmental club), provide girls with experiential learning that incorporates problem solving and/or creativity and design skills as well as providing investigative opportunities into academic areas that may not be part of the regular school day. Through hierarchical regression analyses, this study examined the extent to which middle and high school girls' (n = 915) age, and interest and confidence in a) problem solving and b) creativity and design predicted their interest in four STEM subject areas. A follow up analysis identified the extracurricular activities in which girls with higher interests in problem solving and creativity and design were involved. Results revealed that interest in problem solving was a positive predictor for interest in all four STEM subject areas; whereas, interest in creativity and design was a positive predictor for interest in computers and engineering, but a negative predictor for interest in science.
Weed Technology, 2002
ABSTRACT Epicuticular wax is a major barrier to the movement of foliar-applied herbicides into pl... more ABSTRACT Epicuticular wax is a major barrier to the movement of foliar-applied herbicides into plant leaves. Many researchers have evaluated the penetration of herbicides in plants using similar methods. However, the methods used to remove unabsorbed herbicide from the leaf surface have been inconsistent among scientists. Laboratory experiments were conducted to evaluate the effectiveness of various compounds as a leaf wash for removing unabsorbed C-14-labeled herbicides from shattercane and velvetleaf leaves. Product B and Product C provided poor results as a leaf wash compared with water, chloroform, methanol, and Product A. Product A increased the amount of C-14-bentazon removed from velvetleaf by 26% compared with the amount removed by chloroform, methanol, or water. Removal of C-14-nicosulfuron was not different between chloroform, Product A, methanol, or water. Although water was the best treatment for the two salts of C-14-glyphosate, Product A was as good or better than chloroform and methanol.
Journal of Women and Minorities in Science and Engineering, 2013
Bronfenbrenner's bioecological model of human development, several factors were hypothesized as h... more Bronfenbrenner's bioecological model of human development, several factors were hypothesized as having an impact on girls' STEM development; specifically, the macrosystems of region of residence and race/ethnicity, and the microsystems of extracurricular STEM involvement, family STEM influence, and math/science teacher influence. Hierarchical regression analysis results indicated that extracurricular STEM involvement and math teacher influence were statistically significant predictors for 6th-12th grade girls' interest and confidence in math. Furthermore, hierarchical regression analysis results indicated that the only significant predictor for 6th-12th grade girls' interest and confidence in science was science teacher influence. This study provides new knowledge about the factors that impact girls' STEM development. Results can be used to inform and guide educators, administrators, and policymakers in developing programs and policy that support and encourage the STEM development of 6th-12th grade girls.