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Coggins, Porter E., III; Glatzer, Tim – PRIMUS, 2020

We present an algorithm for a matrix-based Enigma-type encoder based on a variation of the Hill Cipher as an application of 2 × 2 matrices. In particular, students will use vector addition and 2 × 2 matrix multiplication by column vectors to simulate a matrix version of the German Enigma Encoding Machine as a basic example of cryptography. The…

Descriptors: Mathematics Instruction, Matrices, Technology, Addition

Bruder, Andrea; Kohler, Brynja R. – PRIMUS, 2020

Although modeling is an integral process in applied mathematics, students rarely encounter modeling opportunities in their calculus courses. We introduce a laboratory experience as a starting point for calculus students to investigate multivariable functions. A layered system of coffee and milk serves as a physical model for temperature gradients…

Descriptors: Calculus, Mathematics Instruction, Climate, Food

Seager, Suzanne – PRIMUS, 2020

For many of my students, Real Analysis I is the first, and only, analysis course they will ever take, and these students tend to be overwhelmed by epsilon-delta proofs. To help them I reordered Real Analysis I to start with an "Analysis Boot Camp" in the first 2 weeks of class, which focuses on working with inequalities, absolute value,…

Descriptors: Mathematics Instruction, Teaching Methods, Mathematical Concepts, Concept Formation

Yao, Guangming; Black, Kelly; Ramsdell, Michael; Skufca, Joseph – PRIMUS, 2020

Improving student success rates in introductory calculus and physics courses is critically important for our students' path in STEM fields. Many of the students who have an intuitive understanding of physics fail calculus and are pushed to delay or drop their majors in technical fields. One way of addressing this issue is by adopting a program…

Descriptors: STEM Education, Undergraduate Students, Success, Mathematics Achievement

Reinholz, Daniel L. – PRIMUS, 2020

This article describes an inquiry-oriented real analysis classroom in which students were guided to discover mathematics for themselves. To support student inquiry, the framework of "five practices" from K-12 education was used. To illustrate this framework, two case examples are given from actual discussions that took place in this…

Descriptors: Mathematics Instruction, Teaching Methods, Inquiry, Mathematical Concepts

Bossé, Michael J.; Cook, William J.; Castonguay, Joseph M. – PRIMUS, 2020

Following a line of inquiry regarding the exact number of real roots of a real polynomial, this investigation considers: Descartes' Rule of Signs, the Budan-Fourier Theorem, and versions of Sturm's Method in contrast with the approximate root count gleaned from graphing utilities. Online applets are provided to allow the reader to freely…

Descriptors: Mathematics Instruction, Mathematical Concepts, Concept Formation, Educational Technology

Flórez, Rigoberto; Mukherjee, Antara – PRIMUS, 2020

We describe some classic experiments on the Möbius strip, the projective plane band, and the Klein bottle band. We present our experience with freshmen college students, college teachers, high school students, and Mathematics Education graduate students. These experiments are designed to encourage readers to learn more about the properties of the…

Descriptors: Mathematics Instruction, College Mathematics, Secondary School Mathematics, Undergraduate Study

Peters, Travis; Johnston, Elgin; Bolles, Heather; Ogilvie, Craig; Knaub, Alexis; Holme, Thomas – PRIMUS, 2020

Team-Based Learning (TBL) uses a flipped classroom model and involves students working collaboratively in small groups, with peer assessments to promote group accountability. We implemented TBL in Calculus I in both large (N [tilde] 150) and small (N [tilde] 35) class settings. We investigated the impact of this form of instruction over two…

Descriptors: Teamwork, Mathematics Instruction, Homework, Video Technology

Ward, Erika L. – PRIMUS, 2020

Homework gives students the opportunity to practice new skills in both familiar and unfamiliar situations, and to develop an understanding of related concepts. Although some of these goals can be easily accomplished in online homework, many systems are less useful for handling open-ended questions. Written homework, on the other hand, takes time…

Descriptors: Homework, Teaching Methods, Feedback (Response), Learner Engagement

Carducci, Olivia M. – PRIMUS, 2020

The activity described in this paper is based on the idea that reading an introductory undergraduate mathematics text is similar to reading instructions. I want my students to think about how to read when the goal is to learn to complete a task. I give them written instructions for doing a card trick and ask them to complete the trick. The…

Descriptors: Undergraduate Students, College Mathematics, Mathematics Instruction, Reading Instruction

Le, Phong – PRIMUS, 2020

Local community organizations with data and statistical needs provide beneficial authenticity and context in the classroom. Students can provide creative, broad perspectives to problems and issues relevant to those organizations. This paper describes characteristics of mutually beneficial relationships between classes and community partners.…

Descriptors: Statistics, Partnerships in Education, School Community Relationship, Low Income Groups

Hodge, Angie; Wanek, Katie; Rech, Janice – PRIMUS, 2020

In this paper, we will discuss a type of activity that lets the mathematics classroom become a place where students can learn more than mathematical content. Specifically, students can learn interdisciplinary skills in the area of communication (both verbal and non-verbal) and debate skills that are often taught in communication or English…

Descriptors: Interdisciplinary Approach, Communication Skills, Learning Activities, Mathematics Instruction

David, Erika J.; Hah Roh, Kyeong; Sellers, Morgan E. – PRIMUS, 2020

This paper offers instructional interventions designed to support undergraduate math students' understanding of two forms of representations of Calculus concepts, mathematical language and graphs. We first discuss issues in students' understanding of mathematical language and graphs related to Calculus concepts. Then, we describe tasks, which are…

Descriptors: Mathematics Instruction, College Mathematics, Undergraduate Students, Calculus

Gordon, Sheldon P.; Gordon, Florence S. – PRIMUS, 2020

This article illustrates ways that dynamic software using some sophisticated techniques in Excel can be used to demonstrate fundamental ideas related to hypothesis testing to increase student understanding of the concepts and methods in elementary statistics courses. The article considers hypothesis tests for the population mean with large or…

Descriptors: Hypothesis Testing, Computer Software, Educational Technology, Technology Uses in Education

Eklund, Holly – PRIMUS, 2020

The purpose of this paper is to explain a newly implemented interactive delivery model for students at the Colorado School of Mines (Mines) repeating Calculus for Scientists & Engineers I during the spring of 2017. Since calculus is a necessary component for so many STEM degrees, it will continue to be a gateway to obtaining such degrees and…

Descriptors: Teaching Methods, Delivery Systems, Calculus, Scientists