I've been assigning algebra textbook and worksheet problems (from the publishers and my own) that look like this:
Simplify the following expressions.
- $x^{- 3} y^2$
- $c^2 d^{-5}$
- $\dfrac{x^{-2}}{y^{-4}}$
- $\dfrac{5x^2}{y^{-2}}$
I don't feel that my students (who come from low income families) are getting the materials. In three weeks the district wants to know if I am teaching the students this content. What is ridiculous is their suggestion to cover "negative integer exponents in 1 day" followed by "rules of exponents in 3 days." The next week they are theoretically supposed to be on "quadratic equations." I want to laugh at the clueless people who made this scheduling and question whether they've ever taught at an inner city school. How do I teach this material in a culturally relevant and engaging way? What teaching practices and materials could I use? I don't know what kind of curriculum is out there for me to use, this is so challenging! I need student engagement and comprehension of the materials.
When I call out random students what happens next at each step I get resentful looks. I've tried appealing to their number sense intuition by looking at patterns, but it only works for some not all students. Obviously something is not working.
I completely believe that your kids do not understand x and y, let alone exponents, let alone negative exponents. And the amount of time it takes to make up this ground is considerable. Of course you can't do it in the time allowed.
However, in terms of getting more relevant, one thing they all like is sports. You might poll them about which sports engage them the most (at least they will pay attention while you do that). Say it is basketball. Suppose someone needs to take 1000 practice free throws. Suppose the first day they take 5 throws, the 2nd day they double that, the 3rd day they double down again, etc? How many days to get to 1000 free throws? (And how much better will they be after that? Maybe the needed number is 5000 or 10,000 -- what do they think?). I'm sure you can invent many other problems. Perhaps negative exponents can be expressed as penalties?
Another thing that interests them is money. You might talk about scams. We all get scammed, even those of us who know a lot of math, if only because the worst scammers manage to lobby their way into laws that enable or even require the scams. It is easier here to discuss percentages than exponents, but I'll bet you can imagine some financial scenarios, legitimate or otherwise.
I've passed along your question to a friend who has substantial experience teaching math to inner city students. If she has any suggestions, she or I will enter them here.