RLG100Y1 Lecture : Lecture notes on Buddhism-February 5th

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(Provide feedback relating to each rubric component (Article pros and cons, course application, defense of
position, and quality of writing). 5 points each making up 20 points.

Stoichiometry is traditionally a topic that is covered in each of the different levels at Argo Community High School (Argo). While the Honors Chemistry and Advanced Placement (AP) Chemistry courses stress a mathematical approach to mass and mole relationships, the Regular Chemistry course typically receives a lighter, scaled back approach due to a lower level of math skill and achievement. In Bird’s “Stoichiometric Calculations Using Equivalent Molar Expressions”, the argument is made for a different mathematical approach using equivalent molar expressions instead of the standard unit or dimensional analysis method (2006). While this method does have some unique benefits for all students it would be difficult to implement completely at all levels of chemistry at Argo. One of the best aspects of using “equivalent molar expressions” is it shows the importance of the relationship of a balanced equation to the reacting moles (Bird, 2016). Students at Argo currently have two paths into Chemistry; a traditional biology first sequence and a nontraditional physics first sequence. The teachers in the freshman physics first sequence stress dimensional analysis throughout the course. For Sophomore Honors and AP Chemistry students stoichiometry occurs early in the semester and is continued throughout the school year. Although students have had at least one previous year using dimensional analysis, their proficiency in using dimensional analysis determines the students’ success or failure with stoichiometry. Students often rely on rote methods to arrive at a final answer but cannot always explain the value they calculated. Using the molar expressions method, each equivalent mole of reactant or product is determined by using the relationship of the coefficient to the starting or ending moles in the reaction. Through this method the students can see that the moles are equivalent and interchangeable, thus making a stronger connection to a particle approach to stoichiometry. Instead of a rote method of a series of dimensional analysis problems the student can quickly and easily determine the moles or other quantity desired in a balanced equation. Another positive aspect of the molar expression method is its flexibility in use with various topics. This method, combined with an ICE/BCA table (Initial, Change, End or Before, Change, After) approach, can be used to quickly inform the student of how much excess remains, how much product is formed, and what is present in the reaction vessel at the end of a reaction (May, 2017). Students in Honors and AP Chemistry at Argo struggle with determining the amount of excess reactant that remains at the end of a reaction. Various wrong methods to determine excess remaining are applied as it is a different calculation than their rote processes previously developed. Using molar expressions, combined with an ICE/BCA table, students can quickly see the amount remaining and will more accurately understand the process of the limiting reactants and the reaction itself. The students can also see that at the end there are some reactants and products remaining. Combining molar expressions with an ICE/BCA table has an added benefit of introducing ICE tables earlier in the curriculum. Although using equivalent moles can simplify stoichiometry calculations while also clarifying many mathematical misconceptions, the worst argument is the inclusion of the actual molar expression to the calculations as it is an unnecessary addition and one that would be detrimental to understanding the stoichiometry of the reaction. When students see a myriad of equations for the numerator they either quickly look for a method to memorize all of these diverse equations or simply assume it is too complicated to understand. If instead the mole was used and equivalent moles was determined instead of equivalent molar expressions, the work would become less clouded with variables. High School students may lose vigor when confronted with such a problem. Instead the students should rely on their ability to convert into moles by using molarity, the ideal gas law, or simply grams to moles, and then use equivalent moles, the process of stoichiometry can be kept separate from the method of determining moles in various ways. Using equivalent molar expressions, or just equivalent moles as I have argued, a connection can be made to both Extreme Whoosh Bottle Trio and Big Time Ethyl Alcohol Explosion videos provided by Flinn (Bracken, Dombrink, & Long, 2017; Marek, 2017). To make the demonstrations quantitative you could simply measure the amount of water generated in each demonstration. The Extreme Whoosh Bottle Trio lends itself particularly to a quantitative treatment as three different concentrations of alcohol were used. By determining the amount of water that should be generated by the 70% isopropyl solution and then comparing it to the amount of water that is actually generated, students can quickly see the application of stoichiometry as well as the use of equivalent molar expressions. The same treatement can be applied to the pure ethanol as well as the 95% isopropyl, allowing several examples as either an introduction or a summation set of demonstrations. The general idea of the equivalent molar expressions is applicable and should be used in all classes at Argo, with some modification (Bird, 2016). While the AP and Honors Chemistry students can definitely use the molar expression within the ICE/BCA table described within this paper, I have argued that the students will find it simpler without the molar expression, instead just using moles in the expression. But it would be advantageous to use molar expressions at the end of the year as a mathematical summation of several topics including percent composition, molarity, and ideal gases. However, the Regular Chemistry students would see no benefit of including molar expressions into the ICE/BCA table. The complexity of several different possible numerators would prove to be too cumbersome. Instead, it would be more appropriate to implement equivalent moles in those classes.

the full case is below. i need help answering "How would you evaluate whether the sample size for the survey was appropriate in this case?" please. Thanks

Mastering Teacher Leadership

>Abstract

This case is about a multistage, communication study of teachers by Wittenberg University’s Department of Education to determine the viability of starting a Master of Education program for Ohio-certified teachers working within school districts serving a five-county area. www.wittenberg.edu

>Background

Ohio legislators recently implemented new standards for those wishing to teach within Ohio’s public and private schools. Teachers certified to teach in Ohio in 2002 or later will need to complete a master’s degree before obtaining their second licensure renewal. New teachers, therefore, will have a five- to seven-year window to complete the master’s degree after their initial licensure to teach. Historically, teachers have looked to graduate level courses to fulfill their professional development requirements. According to the newly passed Ohio Department of Education Teacher Certification Standards, for the first time all professional development activities must be tied to professional development plans customized by local school district goals. All such plans will be approved and monitored by Local Professional Development Committees. These LPDCs will look favorably on courses that fit local goals, which are increasingly motivated by student performance variances on standardized tests. Wittenberg University is primarily a resident campus of 2,000 students affiliated with the Lutheran Church in America. Located in central Ohio, Wittenberg is a comprehensive liberal arts institution with professional programs in education, business management, pre-med, and pre-law. It has been training teachers for more than 150 years and has earned a reputation for producing exceptional teachers for K–12 programs. This high quality, as perceived by local teachers who supervise Wittenberg undergraduate field teaching experiences, is expected to be Wittenberg’s greatest asset in pursuing the development of a master’s program. Wittenberg, historically, has not offered a graduate degree in education, but it has offered graduate degrees in its nationally recognized music program and, until the mid-1980s, in its theology program. Wittenberg sees the change in Ohio Teacher Certification Standards as an opportunity for its Center for Professional Development (WittCPD), a program of professional development courses designed to fulfill the continuing education requirements of teachers in the area. Central Ohio is rich with high quality universities. Within a 30-minute drive of Wittenberg’s campus, undergraduate teacher education programs can be found at Wright State University (WSU), the University of Dayton (UD), Urbana College, Cedarville College, Wilberforce University, and Central State University. WSU and UD currently offer Master of Arts degrees in teaching. WSU offers continuing education programs that fulfill professional development programs. Increased turnover is also expected to be a motivating factor contributing to increased enrollment in university development programs. Ohio’s schoolteacher turnover is expected to increase due to the aging of the teacher population, incentive buyout programs designed to encourage aging teachers to retire, and the need to hire experienced teachers in the hard-to-fill math and science areas. With an average 15 years teaching experience, Clark County schools have more than 900 certified staff and hire 50–60 new teachers each year. Springfield City schools have more than 800 certified staff and hired 119 teachers in 1997, 99 in 1998, and 118 in 1999.

>Research

The faculty of the education department, in concert with university administrators, conducted a brainstorming session in early fall 1998 to identify university resources that might contribute to a master’s program in education. This was followed by a retreat with an Ohio Department of Education consultant, who reiterated the advantages of a liberal arts-based program in the ongoing preparation of K–12 teachers. To further explore the opportunity for offering a Master of Arts degree in Classroom Leadership, WittCPD conducted three focus groups: two with Springfield City district teachers and one with local school superintendents. Both groups were positive about the likelihood of a program customized to the needs of the various local school districts. Additionally, they provided direction for the desired content and orientation of an effective program. Such a program would need to: • Deal with the diverse cognitive and social needs of students. • Emphasize technological literacy for both teachers and students. • Emphasize both program and classroom assessment by providing a sound research foundation for both curriculum and instruction. • Address classroom management issues of student social skills, moral education, and discipline. • Provide a framework for teachers to learn to collaborate with other teachers and with community professionals. In the spring of 1999, Education faculty associated with the WittCPD drafted a market survey and mailed it to 2,000 practicing teachers in a four-county area. Each of the 1,600 teachers in Clark County, Wittenberg’s home county, received a questionnaire, with the remaining 400 surveys delivered to a systematic sample teaching in the outlying counties of Green, Montgomery, and Champaign. By September 1, 1999, 763 teachers had returned their surveys (31.8 percent response), of which 53.8 percent of respondents had completed or were enrolled in degree programs beyond the bachelor’s level.

>Initial Results

Out of 763 teachers, 21.2 percent said they definitely would enroll, with an additional 57.7 percent who might enroll, citing professional requirements, professional advancement, or keeping their certification as the three primary reasons for enrolling. Those who expressed a lack of interest in a Master of Arts program at Wittenberg claimed as three obstacles the anticipated high cost, their holding a current master’s degree, or family responsibilities. In order for the Wittenberg Board of Directors to approve offering of the new degree program, the program needs to continue the liberal arts tradition and strengthen the undergraduate teacher education program, as high quality undergraduate education is seen as part of Wittenberg’s primary mission. Additionally, new academic initiatives such as the one proposed are increasingly asked by the board to reach break-even within their first operating year.