Not as expensive as trying to buy the presentation books for Connecting Math Concepts (which are what like $500 per grade level?) but still expensive enough I think most parents will be scared off.
I purchased my copy through a second hand store, https://www.worldofbooks.com. It took a bit of time waiting for a copy to show up but I paid less than $20 dollars for it.
Seriously. I'm a public school math teacher, mainly grade 9, and I've been wanting a copy of it for several years, but can't justify the money. I've looked for it used, as well. Author lucked out.
As an aside, I would point out that of the materials listed, Math Academy and AOPS/Beast Academy skew to parents whose students are trying to get ahead and need challenging materials, versus help, support, and remediation.
Direction Instruction Math is really expensive!
Not as expensive as trying to buy the presentation books for Connecting Math Concepts (which are what like $500 per grade level?) but still expensive enough I think most parents will be scared off.
I purchased my copy through a second hand store, https://www.worldofbooks.com. It took a bit of time waiting for a copy to show up but I paid less than $20 dollars for it.
Seriously. I'm a public school math teacher, mainly grade 9, and I've been wanting a copy of it for several years, but can't justify the money. I've looked for it used, as well. Author lucked out.
As an aside, I would point out that of the materials listed, Math Academy and AOPS/Beast Academy skew to parents whose students are trying to get ahead and need challenging materials, versus help, support, and remediation.