David R. Duncan

2METHODS FOR PRODUCING TRANSGENIC PLANTS

Anisha Akula,David R Duncan,Brenda A Lowe,Michael T Mann,William L Petersen,Jyoti R Rout,David D Songstad,Joel B Wilks,Wanggen Zhang

2012引用：28

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3Fibonacci Pattern Formulas

First paragraph: Teachers and their students often use the Fibonacci sequence when they study number patterns. The Fibonacci sequence is displayed below ....

2009

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4Fibonacci Pattern Formulas

2009引用：23

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5Procédés de production de plantes transgéniques

Anisha Akula,David R Duncan,Brenda A Lowe,Michael T Mann,William L Petersen,Jyoti R Rout,David D Songstad,Joel B Wilks,Zhang Wanggen

2007引用：22

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6Verfahren zur herstellung transgener pflanzen

Anisha Akula,David R Duncan,Brenda A Lowe,Michael T Mann,William L Petersen,Jyoti R Rout,David D Songstad,Joel B Wilks,Wanggen Zhang

2007引用：23

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7Counting Coffee Combinations: an Example of the Fundamental Principle of Counting

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8Circular Clock Movements: A Geometric Application

2004引用：23

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9A Novel Culture Method for Corn Transformation

David R Duncan,Vladimir Sidorov

2004引用：29

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10Calculating Candy Combinations: A Puzzle Problem

2003引用：22

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11Calculating Candy Combinations: A Puzzle Problem

First paragraph: Teachers are constantly seeking problems that will attract students’ interest and that can be used to exemplify algebraic concepts and skills. Puzzle problems provide a rich source of opportunities in this arena.

2003

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12Connecting Mathematics to Politics: An Exercise in Proportional Reasoning.

2001引用：23

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13Connecting Mathematics to Politics: an Exercise in Proportional Reasoning.

2001Ohio Journal of School Mathematics

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14Map Mathematics: Counting Bordering States.

1998引用：23

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15Forming and Adjusting Conjectures: Perimeter and Pattern Blocks.

Bonnie H. Litwiller,David R. Duncan

1997Mathematics in school（1997）引用：23

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16An Algebra-Geometry-Trigonometry Connection: Distance on Hexagonal Dot Paper.

1997引用：23

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17Parallelogram Diagonals on Isometric Dot Paper.

Bonnie H. Litwiller,David Duncan

1996The Australian mathematics teacher引用：23

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18Interpreting Negative Results in an Angle Maximization Problem

The correct interpretation of positive and negative results in a situation involving mathematical modeling poses problems for some students. This article presents a situation in which differential calculus is used with inverse trigonometric tangentfunctions to maximize an angle measure. A negative distance measure ultimately results, thus requiring a reconsideration of assumptions inherent in the initial figure.

1995School Science and Mathematics（1995）引用：1

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19Connecting Mathematics and Baseball: A Batting Analysis.

1995引用：23

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20Prizes in Cereal Boxes: an Application of Probability

Bonnie H. Litwiller,David R. Duncan

School Science and MathematicsVolume 92, Issue 4 p. 193-195 Prizes in Cereal Boxes: An Application of Probability Bonnie H. Litwiller, Bonnie H. Litwiller Department of Mathematics and Computer Science University of Northern Iowa Cedar Falls, Iowa 50614Search for more papers by this authorDavid R. Duncan, David R. Duncan Department of Mathematics and Computer Science University of Northern Iowa Cedar Falls, Iowa 50614Search for more papers by this author Bonnie H. Litwiller, Bonnie H. Litwiller Department of Mathematics and Computer Science University of Northern Iowa Cedar Falls, Iowa 50614Search for more papers by this authorDavid R. Duncan, David R. Duncan Department of Mathematics and Computer Science University of Northern Iowa Cedar Falls, Iowa 50614Search for more papers by this author First published: April 1992 https://doi.org/10.1111/j.1949-8594.1992.tb12171.xCitations: 1AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume92, Issue4April 1992Pages 193-195 RelatedInformation

1992School Science and Mathematics（1992）引用：2

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