deviations in parentheses are also shown in the table. Table 2 Summary of student performance in spring and fall 2014 Semesters Group Enrollment Final Exam Average Passing Score GPA rate Spring 2014 Traditional a 23 68.1 (18.8) 1.78 52.2% b Redesigned 88 70.8 (17.9) 2.00 61.4% Fall 2014 Traditional a 30 65.8 (22.0) 2.07 66.7% b Redesigned 95 65.9 (16.2) 2.10 70.5%a Grading system: 5% attendance, 15
. Page 26.1712.7 Figure 6: Circular and Square Cross SectionsFigure 6 shows a comparison of the two cross sections analyzed in this work. This sectionaddressed the circular cross section. In the next section, the square cross section is addressed.Note that for this work, a = s = ½ in. (b) Non-Circular SectionsFor this purpose, specimens of a square cross section (½ in x ½ in) of aluminum 6016-T6 wereused. The torque-twist characteristics were obtained in the same way as the circular crosssection, but only one material was used. The results are shown graphically in Figure 6.For the square cross section, the determination of torsional stiffness requires consideration ofwarping which is available only in advanced texts on
., and Knipp, D. (2003), The knowledge survey: A tool for all reasons. To Improve the Academy, v. 21,p. 59-78.Wirth, K., and Perkins, D. (2005), Knowledge Surveys: An Indispensable Course Design and Assessment Tool.Innovations in the Scholarship of Teaching and Learning.https://www.macalester.edu/academics/geology/wirth/wirthperkinsKS.pdfBloom, B. S., and Krathwohl, D. R. (1956), Taxonomy of educational objectives: The classification of educationalgoals / (1st ed.). New York: Longmans, Green.Bowers, N., Brandon, M., & Hill, C. D. (2005), The Use of a Knowledge Survey as an Indicator of Student Learningin an Introductory Biology Course. Cell Biology Education, 4(4), 311–322. http://doi.org/10.1187/cbe.04-11-0056Bell, P., and Volckmann, D
incorporatebusiness thinking into design choices, whether it is optimizing profit or identifying customerneeds. A good example of all of these concepts comes in the form of the bicycle lab. In this lab,the students first learn and experiment with mechanical advantage by bringing in their own bikeand working with the gear systems. Then, they have analyze the needs of a new bicycle sharingprogram made by a real bike company (Trek/B-Cycle) and have to determine which customerbase is optimal to cater to. By making design and business choices, the students are able to beexposed to a variety of learning techniques. By using the four primary objectives of Kolb’sExperiential Learning Model (feeling, watching, thinking, and doing), the unique variety of thisclass
Richter scale and lastedfor a duration of 500 to 600 seconds. It was so large that it caused the entire planet to vibrate with anamplitude reaching over half an inch. The quake released an amount of energy equal to a 100 gigatonbomb. It was the second largest earthquake ever recorded by seismographs. Earthquakes are caused when built up stresses along the fault lines are suddenly released. Faultlines are boundaries of tectonic plates. Tectonic plates are large segments of earth crust that float on topof the earth magma and lock up along the fault lines. Fig.1 shows the three basic types of earthquakemovements. A combination of these basic movements is used in explanation of earthquakes. (a) (b
-preparation time was spent in each of these activities? NOTE: Your percentages should total 100. a. Reading relevant textbook sections for the first time b. Re-reading relevant textbook sections c. Reviewing homework solutions d. Solving problems purely for practice e. Reviewing your own notes f. Studying and discussing concepts with team members g. Other; please specify: 3. Now that you have reviewed your graded exam, estimate the percentage of points lost due to each of the following (again, make sure the percentages total 100): a. Arithmetic errors b. Lack of
anecdotes was effective in drawing the attention of the classand throwing in a different element to the general engineering theory that was refreshing. Iappreciate the effort you put into engaging the students. […]” II-b) course-related EPsSome course-related activities were used to make the lectures more interesting and rich ofcontext, and keep the students engaged. As an example, a guest speaker was invited to give amini lecture on a real-life design problems on fatigue (one of the subjects of the course). Theguest speaker talked about a mining factory and the fatigue problem in the exhaust fans and howthey could solved the problem. It was so interesting to the students to see the equations they havejust learned, were used in a real-life
. 311–324, Oct. 2006.[4] Hmelo-Silver CE. Problem-based learning: what and how students learn. Educ Psychol Rev 2004;16 (3):235–66.[5] Barroso, L. R. and Morgan, J. R. (2012) Developing a dynamics and vibrations course for civil engineeringstudents based on fundamental-principles. Advances in Engineering Education. 3 [1], p 9-44.[6] Bransford JD, Schwartz DL. Rethinking transfer: a simple proposal with multiple implications. Rev Res Educ.1999; 24:61–100.[7] Barry, B. E., Brophy, S. P., Oakes, W. C., Banks, K. M., & Sharvelle, S. E. (2008). Developing professionalcompetencies through challenge to project experiences. International Journal of Engineering Education, 24(6),1148-1162[8] Kirschner, P. A., Sweller, J., and Clark, R. E. (2006
courses. The participants were given the problem on apiece of paper with no force or length dimensions, as shown in Figure 3. The layout of theproblem presented to the participants was similar to the assembled truss shown in Figure 1. A B C P D EFigure 3. Representative image of the truss given to students. Note the absence of dimensions and force magnitudes.Using think aloud protocols, the participants were asked to draw a free body diagram of the truss,verbally describe the steps necessary to determine if the
solvethe equilibrium equations one by one in the order of given sequential questions (i.e.,BC→HC→HG). Instead of requesting to indicate the direction of forces in words, the sequentialquestions ask students to indicate them with positive and negative values following the signconvention as noted. It is not vital to list up sub-question set in a strict solving sequence. Instead,it is recommended to make the questions variable base (i.e., numeric values of each unknownvariable). The questions can be easily rearranged in sequential order when the evaluation ismade.Figure 1 – Sample truss structure problems: (a) ordinary open-ended style and (b) sequential sub-question setGrading a sequential question setThe blank answers and the first out of tolerance
recognition and solving handout shown in Appendix B. Journal 5: How has your note-taking changed? How has it affected your ability to recognize and solve problems? Journal 6: At the end of the course, students completed a short questionnaire, enabling them to reflect on their participation and to offer suggestions for improvement. The questionnaire content is included in Appendix A.The data from the journal prompts and the questionnaire is included in the Results section below.MethodsThis naturalistic study was conducted within the class as described above. The journals, whichwere simply a part of the normal structure of the class, were collected as data. These journalswere analyzed using qualitative methods. Since
covered in the course by integrating experiencesusing a FE analysis program, b) provide students with a basic understanding of FE theory, c)provide students with the skill set needed to model and analyze combined load problems using aFE analysis program; and d) provide students with an understanding of how element type, meshsize, support conditions, and other modeling decisions may impact FE analysis results.Previous studies have sought to incorporate FE modeling and analysis content as early as thefreshman year into the engineering curriculum. However, implementing these approaches inStrength of Materials courses often requires students to spend considerable time learning FEtheory before being able to use commercial FEA programs. A few studies
performthe integration, simplify the ratio incorrectly, or, evaluate the constant incorrectly, which wouldbe revealed from the given choices. If the class performance was not up to expectations, studentswould still get the opportunity to improve their score on the question by resubmitting the quiz[18]. If the class size is small enough, alternate and accurate assessment may be performed usinga stand-alone quiz as the Quiz No. 3 shows. As always, a prompt return of the original quiz isnecessary so that students can relearn the missed topic over the approaching weekend (seeAppendix B for a note sent to students).The relevant flow viscosity questions are preceded by understanding of dry friction first indynamics and then (with the help of strength
instruction (with < 10% active learning during the class session) and tworelated homework problems per topic. For the flipped sessions, students watched recordedlectures before class. Each topic had a <20 minute overview video plus an example video whichwere recorded lectures from the same instructor and then edited to present online. Students wereminimally introduced to the in-class activity before dividing into 2-4 person groups to createMindstorms Lego systems to manipulate and evaluate rigid-body motion systems. Two teachingassistants and one grader helped students during Section A flipped session and the instructor anda teaching assistant answered students’ questions during Section B flipped session. As part of thein-class activity, each
. Page 25.1129.3Figure 1: Example ResidenceFigure 1 depicts a sample residence. The door must be oriented such that the residents fall intothe house. The points “A” and “B” mark the two chosen anchor points, used in the structuralengineer’s calculations. Complete details of the original game can be found in [3].The original Delta Design game has been implemented successfully in several academic settings.The Industrial Engineering department at the University of Pittsburg incorporated the DeltaDesign game in an introductory sophomore-level class that teaches students how to model aswell as solve open-ended problems and work in teams. The addition of the game receivedpositive feedback from the students [5]. The game was also used in a study on the
structure to a periodic impact and measure the dominant frequencies using the VibSensor app at anticipated modal antinodes (locations of maximum displacement). b. After determining the frequencies and mode shapes, estimate the locations of modal antinodes and place the shaker at those locations and force at the corresponding natural frequency to induce resonance. Ensure you have discovered a resonant frequency by adjusting the frequency of vibration to identify a maximum response acceleration. Measure the mode shape using the iPods. 3. Revisit your numerical model to make reasonable adjustments to dead loads, section properties and support
bendingmoment conditions above the yield moment, My, but less than the plastic moment, Mp. Forrectangular cross-sections, with a depth, h, and width, b, the plastic moment Mp = 1.5My. Theyield moment is the condition that just produces yield stress, y, at the top and bottom of thebeam, and the plastic moment is the condition that produces yield stress over the full depth of thebeam. A bending moment between these two values is the elasto-plastic moment, Mep. Figure 1. Normal stress-strain diagram for elastic, perfectly-plastic material. Page 26.212.3 Figure 2. Normal strain and stress distribution (profile view) due to elasto-plastic
impulse-momentum module wasmodified to utilize hand held load cells to push avertical plate mounted on the wheelchair (figure2). A laser sensor was used to measure positionand thereby derive velocity. Volunteers fromclass were recruited to perform thedemonstration and data was gathered real-timeon LabviewTM software. Again, momentummeasured was lower than predicted by thecalculations, due to rolling resistance.As part of the grant project this module wasconverted into a video format on youtube.comso that other schools can use it. In 2017 the Figure 2. Impulse momentum module.module in physics will be done with the videoand the outcomes measured again. The video is available at: https://youtu.be/xpbp9hfFIjk. b) F = ma module in Dynamics
on a Box Subject to Lateral ForceQ. You are holding a box of books with flat hands. If you press harder, what happens to thefriction force applied by your hands onto the sides of the box? A. It increases B. It decreases C. It remains the same D. Not enough information to determineTable 5: Results from question 1 Modality Cohort Correct Incorrect Total In-class Homework 1 9 3 12 x 2 37 21 58 x 3 - pre 71 114 185 x 3 - post 81 98 179 xQuestion 2
Class period Instructor(s) N* H1 Homework Fall 2013 TR 8:00-10:45am A&B 37 H2 Homework Spring 2014 TR 8:00-10:45am A&C 32 Q1 Quizzes Fall 2014 WMF 8:00-9:50am A&C 35 Q2 Quizzes Fall 2014 MWF 11:00-12:50pm B 33 M1 ME/Quizzes Fall 2015 MWF 11:00-12:50pm B 34 M2 ME/Quizzes Fall 2015 WMF 8:00-9:50am C 27*N is the number of students included in this study based on exam scores. Students who did nottake either of the exams were excluded from the analysis.As discussed in the
exam performance could not be evaluated as a measure of theflipped classroom due to the changes in the overall examination strategy.In Figure 1, student scores on Exam 1 have been converted to probability density functions basedon the sample mean and standard deviation of the score set, assuming a normal distribution. (a) Figure 1(a) compares the overall distribution of scores from Fall 2013 and Fall 2014, while Figure 1(b) compares the
Squared2 ISMB Non ISMB UndeclaredPre HW 6 3.74 1.117 2.85 1.068 3.38 .744 3.773 .027* .090 a b bPost HW 6 4.71 1.043 4.85 .899 4.50 1.195 .276 .759 .007 a a aPre-Post HW 6 Difference .97*** 2.00*** 1.12*12 *** p < .001, ** p < .01, * p < .053 medium = 0.06, and large = 0.14 18. Eta-squared guidelines: small = 0.01,Groups with the same letter are
/grading/[7] http://newleafedu.com/2018/03/13/rubrics/[8] H.L. Roediger III and A.C. Butler, “Testing Improves Long-Term Retention in a SimulatedClassroom Setting,” European Journal of Cognitive Psychology, Vol. 19, pp. 514-527, 2007.[9] B. Rogerson, “Effectiveness of a Daily Class Progress Assessment Technique inIntroductory Chemistry,” Journal of Chemical Education, Vol. 80, pp. 160-164, 2003.[10] K.C. Bloom and T.J. Shuell, “Effects of Massed and Distributed Practice on the Learningand Retention of Second-Language Vocabulary,” Journal of Educational Research, Vol. 74, pp.245-248, 1981.[11] D. Rohrer and K. Taylor, “The Shuffling of Mathematics Problems Improves Learning,”Instructional Science, Vol. 35, pp. 481-498, 2007.[12] S.K. Carpenter and
. Education + Training, 56(2/3), 105–121.[3] Means, B., Toyama, Y., Murphy, R., Bakia, M., & Jones, K. (2009). Evaluation of evidence- based practices in online learning: A meta-analysis and review of online learning studies. Washington, D.C.[4] Phillips, J. A., Schumacher, C., & Arif, S. (2016). Time Spent, Workload, and Student and Faculty Perceptions in a Blended Learning Environment. American Journal of Pharmaceutical Education, 80(6), 1–9.[5] Pombo, L., Loureiro, M. J., & Moreira, A. (2010). Assessing collaborative work in a higher education blended learning context: strategies and students’ perceptions. Educational Media International, 47(3), 217–229.[6] Boelens, R., De Wever, B., & Voet, M. (2017). Four key
OPERATORSDefinition of Rotation Operator The notations used in the equations are as follows: bold letters represent vectors, adouble arrow on the top of a letter indicates a dyad or dyadic. A pair of vectors written in adefinite order, such as ij, is called dyad and a linear combination of dyads is known as a dyadic.Now, consider that a position vector r is rotated with respect to vector n by angle β to r’. Theangle β is measured in the plane perpendicular to n, containing the ends of vectors r and r’ inthat plane as shown in Fig. 1. Let a be a vector with the direction of n and the magnitude of thecomponent of r along n, so that 𝐚𝐚 = 𝐧𝐧 ( 𝐫𝐫 ∙ 𝐧𝐧 )Let b and c be vectors in the circular plane, which is the top view of Fig. 1a looking
other groups will conclude correctly that thebottom strain will be largest, the middle strain will be next largest, and the strain on top of thebeam will be smallest.After coming to a group consensus, a student carefully hangs the 2-kg mass at mid-span andmeasured strains are recorded. Students observe that the top and bottom strains areapproximately the same magnitude but opposite signs and the middle strain is approximatelyzero (an example is shown in Figure 6). (a) Top SG (b) Middle SG (c) Bottom SG Figure 6 Strain readings for 2-kg loadWith this discovery, the instructor graphically summarizes the strain distribution through
) 2However, these textbooks do not provide an explanation regarding how the former formula isevolved into the latter formula. Lacking a good explanation for the latter formula in the text-books or by the instructors in classrooms, students are often made to simply take it on faith thatthese two formulas are somehow equivalent to each other. This paper is written to share witheducators of machine design and other readers two alternative paths that will arrive at the lattergeneral form of the von Mises stress: (a) by way of eigenvalues of the stress matrix, (b) by wayof stress invariants of the stress matrix. When used with the existing material presented in thetextbooks, either of these two paths will provide students with a much better understanding
from the ASEE Annual Conference, Seattle, WA. 5. Ambrose, S. A. (2013). Undergraduate engineering curriculum: The ultimate design challenge. The Bridge: Linking Engineering and Society, 43 (2), 16-23. 6. Turns, J., Sattler, B., Yasuhara, K., Borgford-Parnell, J. L., & Atman, C. J. (2014). Integrating reflection into engineering education. Proceedings from the ASEE Annual Conference & Exposition, Indianapolis, IN. 7. Pintrich, P. R. (2000). The role of goal orientation in self-regulated learning. In M. Boekaerts, P. R. Pintrich, & M. Zeidner (Eds.), Handbook of self-regulation (pp. 451–502). San Diego: Academic Press. 8. Zimmerman, B.J. (1990). Self-regulated learning and academic
and Exposition, Conference Proceedings, 2015, doi: 10.18260/p.24066.[9] E. T. Mullen, “Teaching an engaged analysis class through active learning,” Primus, vol. 22, no. 3, pp. 186–200, 2012, doi: 10.1080/10511970.2010.497957.[10] A. J. Kalkstein, “Passing the test : Is self-grading a viable option at west point ?,” 2011.[11] P. Linford, J. Bluman, G. Freisinger, J. Rogers, and B. Novoselich, “The self-evaluation and revision method for homework : a homework method for metacognition improves post- secondary engineering students ’ attitudes towards homework The self-evaluation and revision method for homework : a homework method for metacognition,” in ASEE Annual Conference and Exposition, Conference
).Recommendations expressed in this material are those of the author(s) and do not necessarilyreflect the views of the National Science Foundation. We also express our sincere thanks to thefaculty at Cal Poly who helped us deploy the surveys and to the students who agreed to take thesurvey.References[1] R. R. McCrae and O. P. John. An introduction to the five-factor model and its applications. Journalof Personality, 60(2):175–215, 1992.[2] S.D. Gosling, P. J. Rentfrow, and W. B. Swann. A very brief measure of the Big-Five personality domains. Journal of Research in Personality, 37(6):504–528, 2003.[3] A.L. Duckworth, C. Peterson, M. D. Matthews, and D. R. Kelly. Grit: Perseverance and passion for long-term goals. Journal of Personality and