Oh great! Definitely let me know if you run into any trouble or could use some help - I'd be happy to jump on a zoom call if that might be of benefit.
We did have a few issues.
1. The hint on the equation simplification section describes the format of the simplified equation as 6 x l. (actual number varies 2 x l x 3) But the only answer that is accepted is in the format is 6l, sans the 'x'.
2. I found the hints' font coloring very hard to read on my old eyes. Also, we did not find out the desired input methods until fairly far along. The SHIFT-8 etc was new to my son and kind of obscure given how soft the font was. Maybe a heads up of the conventions at the beginning?
3. In the word questions section, sometimes the amount being compared to determine the total amount of cages vs squirrels was the exact same. Actual examples -> 2 cages and 2 squirrels vs 2 cages and 2 squirrels. I assuming the desired question would have compared 2 cages and 3 squirrels vs 3 cages and 2 squirrels. (Although that doesn't make sense either.)
4. The spoken word button is a great idea, but the voice is almost incomprehensible to a 10 year old. I know you didn't create the voice, but if there is another easier to understand voice that would help.
5. My son was initially confused by going some distance in a negative amount as a representation for reverse.
6. My son is very competitive and he enjoyed the speed challenge, but there was no reward or signification of accomplishment at the end of the challenge. He wanted to know how well he did.
6. There are some minor grammar errors.
My impression was that the layout and design was on par with other online offerings that we use daily. I actually liked the lower distraction level. The site and UX were predictable, easy to use and did not add to the stress level of the student. I'll have him do some more over the next few days. Keep up the good work!
You've definitely encountered some (fortunately non-crashing) bugs here that I need to look at and fix (the 22 versus 22 for instance needs to have different numbers to make sense in a lesson on operand-order equivalence for multiplication), but seems like there are also quite a few product/design tweaks I should make as well.
For the lessons jumping around --> that's actually intentional & very important for learning (though from your feedback I can see I really need to make it much clearer why so that learners don't experience it as aimless) - question-variation achieves 2 things - it pushes what the learned just covered out of they working memory (so that when they get the question again in a few moments, they need to fully reconstruct the idea in their minds), while at the same time having the learner review lessons they've learned recently (for new users, however, since I don't have any recent lessons for them yet, I'm including questions thy've likely already mastered given their level, which may need to rethink as it could be adding to that potential of aimlessness learners might have).
Thanks again, and definitely let me know if you encounter any other issues.