Headlining (sort of) the assessment section of the US Dept. of Education's new tech plan was this cool assessment tool. Although it gives educational feedback, the tool is intended for assessment alone; you'll be guessing if you try to learn first through this.
I took a question set on Acceleration (after first making myself a teacher and assigning it!). Herewith the final question, where you really need to understand these concepts and graphs. Since I got it, we'll assume I didn't forget all my pricey degree in physics. And, we'll applaud creater Jim Minstrell for a job well done.
Here's the limitation, though. After completing the assessment, the app had this to say of my mastery of acceleration:
You gave best possible answers on 8 out of 9 of the questions in this set. You seem to have a pretty good grasp of this topic. After completing this set you reported that your understanding of this material was "Great! I feel like I could explain the ideas to a friend."Well, that's not exactly the case.
The following feedback addresses some of the ideas that may cause you trouble. You may have had these problematic ideas while answering the questions in this set.
* You seem to be confusing position data with speed data. Typically you need to work with speed vs. time data to arrive at acceleration. Check the definition of acceleration and be sure you are working with speed time data.