How do soils develop over time? Perhaps the best place to learn is a across a chrosequence of deposits that span a wide range in age (and appearance). If we can identify parent material and measure its chemical composition, it can be used as a benchmark for comparison with the chemical composition of soils that were formed from it. This enables us to quantify the degree of chemical depletion. In general we expect older soils to be more depleted, all else equal. But older soils might also be subject to greater physical erosion, in addition to chemical weathering. This complicates the assessment of soil development because the eroded material is no longer present.

Students are presented with two alternate hypotheses about the soils/deposits they visit:
a) the material has been weathering w/ little physical erosion since it was deposited
b) the material has been weathering and eroding since it was deposited
These hypotheses are developed in lectures before the activity and are based on principles of conservation of mass.

During their site visit, students coarsely characterize topography (@2 -- 5 m scale) for several "representative" cross sections. If time is limited this step could be done remotely (e.g., with topo maps and Google earth).

Students assess and discuss evidence for erosional (and depositional) processes since the deposits were created. They look for broad topographic signatures and measure (for example) the spatial density and material volume of tree throw and animal burrowing mounds, if present.

Students also assess and discuss evidence for in-situ weathering (e.g., development of rinds, soil texture, and mineral alteration). The idea is to train their eyes to observe and key in on any site-to-site differences.

Students dig (and discover!) at select sites. They sample soils at regular intervals from pits (with discussion of merits of different sampling approaches e.g., random vs. stratified random). Students discuss relationships in excavated pits.

A jigsaw approach would be an effective way to tackle the large number of field tasks outlined here.

Back in the lab, using literature values, students estimate weathering rates for each deposit. They compare their estimates with back-of-the-envelop estimates for physical erosion rates (based on tree throw/animal burrowing density) and literature values of diffusivity (which can be coupled with curvature measurements).

The instructor promotes discussion of the implications of differences in residence time on weathering rate estimates.

Students analyze samples by XRF; depending on the course's time constraints students are provided with geochemical data from previous year's field effort or other existing data (in this case Taylor and Blum, 1995).

Students are asked to prepare a final report focusing on the following questions: Are soils products of erosion and weathering, or are they being formed in place by weathering alone? Under what circumstances can we expect erosion to dominate over weathering and visa versa? Students first prepare figures and then use them to develop an an outline (reviewed by the instructor) for their report. Students prepare a draft and engage in peer review (one review each). Students revise their reports, based on the peer review comments, and submit their final report.
Designed for a geomorphology course

(Note: this resource was added to OER Commons as part of a batch upload of over 2,200 records. If you notice an issue with the quality of the metadata, please let us know by using the 'report' button and we will flag it for consideration.)

My OER resource for yoga is designed to provide a holistic learning experience, catering to both beginners and experienced practitioners. It encompasses instructional goals, quizzes, and a convenient link to Google Classroom for seamless integration into your learning environment.

Exploring the American Dream: "A Raisin in the Sun" by Lorraine Hansberry.The American Dream means different things to different people. By viewing Hansberry's work, "A Raisin in the Sun", students will have the opportunity to identify the different dreams held by the characters in the play and how they are both similar and different.Reflect on the play and fill in the response sheet regarding each character's "dream." Please use full sentences and proper grammar. There is no minimum word count.

This interactive lesson plan explores the role of Artificial Intelligence (AI) in education, focusing on its impact on teachers, the issue of plagiarism, and concerns regarding data privacy. Designed for intermediate-level students, this class aims to prove their communicative skills (speaking, listening, reading, and writing) while engaging with these relevant topics. The lesson incorporates digital tools such as news reports, Genially, and Educaplay for an engaging and interactive experience.

This lesson includes lectures discussing raising animals like llama, bison, alpaca, ratites, and an activity researching and planning a profitable business in the exotic breeds industry.  Resource originally from New Mexico Animal, Plant, and Soil Science Lesson Plan Library.

Welcome to this Edu-Metaverse and Smart Education Curriculum! This curriculum was developed by ChatGPT, a large language model trained by OpenAI, through questions and interactions with a learner.ChatGPT. (2023, March 29)

Write the code in order to explore the beauty of trigonometric transformations - to potentially be copied to a program like Paint for appreciation of the artistic qualities.

Context based exponential growth and decay questions.

(This is used as a test of OER)

This Project has been completed as part of a standard 10 weeks Calculus 1 asynchronous online course with optional WebEx sessions during Summer 2021 Semester at MassBay Community College, Wellesley Hills, MA.

The Exponents and Radicals module is separated into two parts -- exponents and radicals.  Each part has two subtopics. Each subtopic has a video lecture page and a practice assignment. The video lecture page includes guided notes in pdf form and videos that follow the guided notes.  There are also Word document versions of the notes in the "files" section of this course for instructor convenience.  Each video lecture page also includes supplemental YouTube videos which are optional for students and may be used if further instruction is needed.  The practice assignment is a set of exercises in Derivita that correspond to the skills covered in the video lecture.There are also two review assignments in this module -- one for exponents and one for radicals.  These assignments cover everything from that part of the module, rather than being broken up into parts like the practice assignments. So there are a total of six assignments in the module and instructors can choose which assignments are most appropriate for their students' needs.This work, by Madilyn Marshall, is licensed under a Creative Commons Attribution 4.0 International License.CC-BY

This resource is to introduce the research process, how to find relevant information, and how to compile a varied source list for your argumentative essay. The second portion focuses on thesis statement/claim crafting, outlining, introductions and conclusion drafting.

This Project has been completed as part of a standard 10 weeks Calculus 1 face to face course during Summer 2022 semester at MassBay Community College, Wellesley Hills, MA.

This guide walks you through the basics to get started on screenwriting. It's designed around my college-level screenwriting course, with writing exercises, assignments, and a sample syllabus and course schedule.    

This lesson gives suggestions related to the protection of the environment. The content is appropriate for secondary school students and adults. The lesson plan includes a handout and a presentation and some web 2 tools such as padlet,wordwall,mentimeter,Canva,answergarden.

This instructional material is intended for learners identified under the category of Blended Learning covering face-to-face and flexible learning activities.The Fish 211: Ichthyology instructional material is designed to achieve the learning outcomes of the subject course.This material covers the course guide and study guides of the fifteen (15) modules. Thus, the learning content of this material was prepared for the subject course. This is created to provide the needs of learners taking up the subject course, Ichthyology.This instructional material is intended for the use of Bachelor of Science in Fisheries students undertaking the Fish 211 subject course. This will enable the learners to achieve the intended outcomes of the subject course. Moreover, as students go along with this material, this will provide them with guidance and learning activities throughout the duration of their study.This material contains the necessary instructions, course guide, and study guides towards the completion of this subject course. The Course Guide will introduce the learners to what are the preaparations and precautions in the subject course. Study Guides which are assigned to each modules consist of topic outlines, learning activities, learning tasks, and study questions.

Credit Hours: 3Lecture Hours: 27Lecture/Lab Hours: 0Lab Hours: 0Course DescriptionProvides an overview of the impact of nutrition on aging and the impact of aging on nutrient needs. Examines food access, procurement, preparation, and enjoyment using a socio-ecological framework of health and wellness. Evaluates age-associated psycho-social, economic, and environmental influences on individual food security and institutional program delivery. Emphasizes nutrition and food for healthy aging. Recommended: FN 110, PSY 236, or SOC 230. Prerequisites: WR 115, RD 115 and MTH 20 or equivalent placement test scores.

This resource actually meant to create awareness on depletion and conservation of forests.As we need our future generations should also enjoy the love of nature,but by degradation of forest ,which creates an ecological imbalance. So to avoid such situations it is necessary to build an awareness among us.

This resource provides basic information on four types of friction - sliding, static, rolling, and fluid.  It is aimed primarily at an upper elementary or lower middle school curriculum.