![]() ![]() This information can can help identify patterns and how well students are grasping the material. ![]() The Statistics & Student Results modules provide analytics at the individual and course level, allowing the instructor to quickly assess student performance on an assignment, quiz, or lab. Student answers are evaluated using advanced algorithms and recorded automatically in the instructor gradebook. Students receive immediate feedback as they progress through the lab questions creating a dynamic learning environment. The exploratory questions guide the student through the process of making key observations and drawing conclusions. Students are able to input answers to lab questions while simultaneously running the simulation. Lab exercises are integrated into each simulation and are comprised of numerical and multiple-choice style questions. The interactive simulations are also accessible in stand-alone format (without lab exercises). Designed to be highly interactive and highly visual, users are given full control over relevant experimental variables allowing different scenarios and physical relationships to be investigated. All simulations are accessed from within Physics LE and run full-screen inside a web browser making them compatible with all computers and devices.Įach interactive simulation accurately recreates the physical world allowing in-depth lab investigations to be carried out. Physics LE interactive simulations and accompanying lab exercises provide everything needed for an online lab course, covering all major topics in introductory physics. Multiple-choice questions are conceptual and also numerical in style, with numerical MC questions utilizing randomized values.īased upon the desired objective for the assignment or quiz, the instructor can choose how students interact with problems: single attempt only, multiple attempts with no penalties, or multiple attempts with penalties. In addition to numerical problems, the Physics LE Question Bank also contains multiple-choice questions. Numerical Problems and Multiple-Choice Questions Intermediate steps include varied use of: 1) multiple-choice questions checking for understanding and problem-solving approach (using text or diagrams), 2) input of relevant equations or algebraic expressions, and 3) input of intermediate numerical values which need to be calculated to obtain the final answer.įor all numerical answers specific feedback is provided to students using sophisticated algorithms which evaluate the following: correct numerical value (within a set tolerance), correct unit, order of magnitude errors, sign errors, and common misconception errors. Rather than just requiring students to enter a final numerical value, many Physics LE problems incorporate intermediate problem-solving steps to help guide the student through the problem, also allowing partial credit to be awarded. This prevents plagiarism among students and makes it nearly impossible for students to search online for the answer to a particular problem variation. Most problems have approximately 100 unique variations. This ensures that each student receives a unique version of the problem. (c) Acceleration gradually declines to zero when velocity becomes constant.Physics LE problems utilize randomization of the numerical values used in the problem. The slope of this graph is acceleration it is plotted in the final graph. (b) The velocity gradually approaches its top value. (a) The slope of this graph is velocity it is plotted in the next graph. This motion begins where the motion in Figure 3 ends. ![]() Graphs of motion of a jet-powered car as it reaches its top velocity. Similarly, velocity increases until 55 s and then becomes constant, since acceleration decreases to zero at 55 s and remains zero afterward. If we call the horizontal axis the\boldsymbol,after which time the slope is constant. When two physical quantities are plotted against one another in such a graph, the horizontal axis is usually considered to be an independent variable and the vertical axis a dependent variable. Slopes and General Relationshipsįirst note that graphs in this text have perpendicular axes, one horizontal and the other vertical. This section uses graphs of displacement, velocity, and acceleration versus time to illustrate one-dimensional kinematics. Graphs not only contain numerical information they also reveal relationships between physical quantities. time.Ī graph, like a picture, is worth a thousand words. Determine average or instantaneous acceleration from a graph of velocity vs.Determine average velocity or instantaneous velocity from a graph of position vs.Describe a straight-line graph in terms of its slope and y-intercept. ![]()
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