Based on our record, Khan Academy seems to be a lot more popular than RadioSure. While we know about 106 links to Khan Academy, we've tracked only 1 mention of RadioSure. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I looked up radiosure.com with an online tool and that information says it originates from Moscow which explains the inability to reach it. It could be geoblocked, or just on blackout considering the state of world affairs. Which might explain the absence of Fonzy and other moderators from the different forums. I don't think he can get control of twitter account @radiosure even if he has access to internet. Source: over 2 years ago
You don't say how old she is. There are many programs you can enroll her in BUT if she wants to work at her own pace you can look online for what your state/municipality expects a child to know in each year. You can use workbooks, resources like CK-12 for science and video instruction or Khan Academy. Source: 7 months ago
Khan Academy is your best friend, you can also use openstax if you like reading more. Supplement with a quality textbook and video courses once you reach Algebra 1, this site and r/learnmath have good recommendations. And most importantly practice. Source: 8 months ago
Khanacademy.org Do a search for "investing" and you'll get dozens of free "courses". Source: 12 months ago
Khanacademy.org - seriously - everything from basic integers and counting to advanced calculus - all at whatever pace you need. Source: 12 months ago
However, the math instruction that worked for me (I suddenly had to teach upper level math to expelled students in a self-contained class - and didn't know anything past Alg 1) was khanacademy.org, a free online program. I also learned chemistry and physics when those became required. Source: about 1 year ago
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