<p>I’ve been reading standards documents since the 1980s and it seems like the same stuff over and over again. This document is interesting in that it looks at successful models but there may be some things in their systems that aren’t easily transferred to the US.</p>
<p>I don’t necessarily agree with their approach - I think that algebra can be introduced earlier. Numbers and algebra can be introduced in the abstract - it doesn’t have to be concrete though it can be concrete while it’s also presented in the abstract.</p>
<p>It’s hard to compare a parent working back and forth with a child on this stuff with the right materials, along with the classroom environment that’s the product of committees.</p>