I like this a lot, except I'd be cautious about using "good" there. I know some anxious students who would feel like they were automatically bad at math because they couldn't do all that yet. Maybe "I have mastered the math concept when.

Math Classroom Poster - traits/skills of good mathematicians! (Black or white background with bright writing)

Scaffolded Math and Science: Language of Math poster

Language of Math poster. This poster aligns the words in word problems with the Math symbols they represent, making translating and…

Math Classroom Poster - traits/skills of good mathematicians! (Black or white background with bright writing)

We just learned this...I like this a lot!!

Star Wars themed growth mindset posters for printing