She went on exploring courses on Brilliant.org and was a bit bummed to see that one needs to have a subscription to take lessons outside of the introductory chapter. She was dying to take Logic and Game of Chance courses, and even volunteered to pay half of the monthly subscription price (about $8 a month if you subscribe for a year). This was a bold move - she is already paying $8 out of $20 allowance for her cell phone, and paying up additional $4 would really limit her "free spending" money, but it was a good indicator of how much she loved what she saw on Brilliant website.
Math, Lots of Math!
As my readers know, Smarty loves math. She is especially attracted by non-trivial problems, and she was super excited to see some of the courses offered by Brilliant. I personally like how courses first offer problems and then solutions. It's like a "flipped classroom" - one can attempt a problem based on what one already knows and then learn more from the solution. Brilliant also has courses on advanced math topics such as differential equations and group theory.
There Is Science Too!
For Computer Fanatics
Smarty does not have much interest in computer science, at least for the time being, but Brilliant has college level course on Algorithms, Neural Networks, and Machine Learning. My computer science husband was actually interested to check some of these courses out :)
Luckily for Smarty, she did not have to spend her allowance on subscription, because good people at Brilliant.org gave us a year of membership for free in exchange for a review. The opinion here is entirely my own and Smarty's own - we love Brilliant. It's great for ages starting with about 10+ and all the way to adults looking to refresh their skills or to gain new knowledge. Moreover, you can spend 20% on yearly subscription if you signup following this link. Be Brilliant too!