So, I have posted about DD10's math issues. I found this http://simplycharlottemason.com/store/your-business-math/ and think this could be a great way to get her to see that math is useful in life and I think she would love "running" a pet shop (since that is what she wants to do when she grows up). The problem is I feel like I can't spend the money since it won't really last all that long (that is embarrassing, it's less than $20, but we just don't have it).
Have any of you done anything like this? Or found anything similar for free? I was thinking about just working with DD and developing it ourselves, she can write a basic business plan and we can google costs of items, and I can make up orders from fake people. What do you think? Any additional ideas?