I try not to post judgments that sound hyperbolic. It makes me sound less measured, less reasonable, less reliable. But in this case, I'm making an exception.
ST Math is a math software/curriculum company that has a demo showing their unique "spatial temporal" approach to teaching algebra readiness. It looks like it is trying to build off the old PLATO programs from the 60s and the 70s--a tool like LOGO to help students play games that teach them concepts, they say.
It is the worst program I have ever seen.
Their opening slideshow explains that they will
"introduce math concepts without the use of language, numbers or symbols"
Here's the demo. see for yourself.
The examples are utterly counter intuitive and horribly ambiguous. They've failed to understand how their pictures could be interpreted in ways they did not foresee. Their examples teach students that algebra is a rigged game, where teachers tell you the right answers based on arbitrary hidden rules.
I only mention this because I already know a school that has adopted this program for next year.