Homework System

What is it? 

Xronos is an open-source homework system specific to UF based on OSU's Ximera system Links to an external site.. The mathematics department has been developing numerous courses using the homework system - currently MAC 1105, 1140, 2311 are complete. Dr. Chamberlain writes all content for the MAC 1105 homework system and has complete control of the descriptions, videos, and questions that appear. 

Basic Flow

Content aligns with the modules you are expected to show mastery of through Progress Quizzes. Each course objective has an associated page with at least 1 short lecture video and numerous questions. Honestly completing these questions should fully prepare you for the associated Progress Quiz. 

Why do the quizzes seem to just test on the hardest questions from the homework?

Many of the objectives are designed to end at the level of question you are expected to know. They were specifically designed to slowly introduce nuance and prepare you for the next question. As the quizzes are checking that you have the knowledge to succeed in a future course, they necessarily need to test on the highest-level questions for the objective. 

It erased all of my progress!?!?!

When you click "Another", the green progress for that page is reset. HOWEVER, your progress is actually saved and can be checked at the end of the semester. I've talked with the Ximera team to add a "Best score on this page: XXX%" so you are not worried. It has not been implemented yet, but it is in the works. 

The system is marking my answer wrong when I'm 100% sure I'm right.

It's possible, but unlikely. Common reasons you are not being marked as correct are:

• You are using the wrong variable (if the question asks for variables).
• The format of your answer is not correct (the page asks for the answer x = _ and you just need to put in a number, but you are putting "x = #" in the blank).
• You are not typing correctly (when using functions like log, you need to put your numbers in parentheses. log(6) is a number, log6 are the variables l, o, g multiplied by 6).
• There are multiple fields for answers - try your answer in multiple spots (when factoring something like $x^2+5x+6=\left(x+3\right)\left(x+2\right)$, try (x+3) in both empty spaces. The default is to put the smaller value in the first box but this is sometimes difficult to program).

If you are still having issues, contact the coordinator through Canvas or through dchamberlain31@ufl.edu with the specific module and question. 

How do I put in this special symbol?

Here is a quick list of special symbols. Be sure to use parentheses to and check the preview that automatically appears. When in doubt, click the "Math Editor" at the top of the page to have better control of the format. Do not try to copy a symbol you find and paste it - this will not work!

• $\infty$: infinity
• $\pi$: pi
• exponent: ^ (shift+6)
• square root: sqrt(#)
• cube root: #^(1/3)