1881 Silver Dollar Value

How to Get Straight A's...And Have Fun at the Same Time

You study hard. You memorize. You work at a problem over and over until it feels like your head is going to explode. You think, finally I'm ready for the big test. And you still don't make the grade. Relax.
The truth is, Dr. Gordon Green knows exactly how you feel. He was a bright student. And he studied hard, too. But he struggled his freshman year at college anyway. What happened? He developed a unique ten-step program based on the simple principle that academic success is not so much a question of how hard you study, but how smart you study.
Did it work?
After college, Dr. Green went on to earn a Ph.D. in economics at a prestigious university--all the while maintaining straight A's!
Thousands of student have benefited from his program. How he has adapted his study methods to apply to you. This is an easy, do-it-yourself guide to help you turn frustration into success.
Topics include:
How to get the most out of what you need
How to budget your time
How to take a test
Keys to developing effective study habits
It's not enough to survive school. This guide will help you excel. And remember: There is no such thing as a mediocre student.
Only mediocre results.
A title like How to Get Straight A's in School and Have Fun at the Same Time seems too good to be true, but educator Gordon W. Green Jr., Ph.D. pulls it off. It's a great guide for younger students (in middle school or junior high) who want to ace their classes while still having time for sports, extracurricular activities, and video games. Well organized, written simply but without condescension, this book inspires new habits in students and then explains how to maintain them--hopefully, well into adulthood.
The first section covers the most important tasks facing any pupil: reading books, taking tests, and writing papers. Each chapter stresses the importance of the activity in question and shows how each can be managed with the least fuss. The next, larger, section is more general, advising the reader on such basics as note-taking and self-confidence, which are crucially important to good grades but are never explicitly taught. Green makes up the difference with admonitions to sit up front, prepare for class, and work with the teacher. Better yet, he recaps his advice from each chapter in a few easily digested instructions that can be quickly referenced as needed. It's not too good to be true, and you don't have to be a genius to follow his system and get straight A's--just willing to take the time to do things right and believe in yourself. --Rob Lightner

as the density curve of pre-exposed film changes, you expose film to a low dose of x-rays to simulate developing film with a patient image on it. but, you also put a little slice of lead over part of the film to see how it behaves when unexposed to x-rays... and that's clearly a different result! the film is then fully uncovered (both the exposed as well as the lead-shielded site) step-by-step and exposed to dark room red light for specific amounts of time. the upper bar is the initital 2 minute exposure in the darkroom, followed by: 1 minute exposure, 30 second exposure, 15 second exposure 15 second exposure, 0 second exposure. you just shift a piece of cardboard into a new position by determining the time with a stopwatch, basically, so each layer will have an accumulated dose in the end, e.g. the top layer will have a total of 4 minutes exposure to safe room light. so yeah, that'll lead to a dose accumulation and clearly visible contrasts between the different areas at some point. when the contrast is low, that means you're good to handle the film for that amount of time using safe light. however, you can be more accurate by determining the actual density of the film with a device (densitometer), as there are fixed 'allowed levels' of density / fogging specified by the manufacturer. the left film is a highly sensitive single-emulsion-layer mammography film with a large x-ray pre-exposure (see fogging at the 0 seconds red light exposure area). the film in the middle is double-emulsion-layer film with 'normal' sensitivity, e.g. for x-raying hands / fingers. the x-ray film on the right is the same mammography film as on the left, just with less of a pre-exposure to x-rays. as you can clearly see, there's less contrast and thus, a longer safe handling time under red light for this film, which is not as pre-exposed as the film on the left! ...more in another update about desity curves later. =)

The propane bottle has amazing detail. Check out the mega sized image and focus in on the knob in the center of the image. It is quite amazing just how much information was captured. I'm particularly impressed with the clarity and detail of the image. The multi-exposure doesn't seem to work well in Silver Ai with this film/developer combination and I have no idea why. You can see a bit of strangeness in a couple of places at full resolution. There was some slight damage to the film caused by using plastic reels, but I was able to fix it. This film emulsion is far more delicate than anything else that I have used in the past. This was a trial test of Efke R25 and Rodinal 1+50. The image is ultra sharp and I like the overall tones with the film/developer combination. f/8 1/30sec Efke R25 120 size Rated ISO 25 Developed in Rodinal 1+50 for 8 min at 68F Fixed in Kodak Kodafix b/c of soft emulsion taken with Mamiya RZ67 110mm Sekor lens used tripod and mirror lockup Scanned with Epson Perfection 4490 Photo

Discussing the evaluator's role in performance measurement, this volume focuses on ways to select, develop, and analyze tests. It reviews a variety of potential performance measures--including different types of tests, observations and extant data, and records--then guides the reader to determine which ones are more appropriate for the evaluation. If no existing test is suitable, step-by-step instructions on how to construct one that has scientific reliability and validity are given. The analysis and reporting of data gained from performance testing are also described. Current issues in performance testing are disclosed--including those related to legal challenges and test validity. Examples are drawn from a wide range of fields, including education, business, and social services.