Originally Posted by Iucounu
I'd expect much more in-depth exploration of those topics, plus problem solving including some early pre-algebra.

Ooh - problem solving - I forgot that (thank you). They do that as well. Not sure about the pre-algebra.

Originally Posted by Iucounu
DS7 is completely past the fourth grade curriculum as outlined-- he will honestly get zero benefit from it.

Not my DS8... He's kind of all over the map. He was happily doing fractions and negative number equations in grade one but struggles with word problems. He learned regrouping much earlier than his peers and could do it in his head without showing his work but he kept mixing up the + and - symbols. (sigh. slowwww dowwwwn buddy.)