A short time ago Dojogirl was asking if we could give her an assignment that involves figuring out the cost of living. We had been talking about teaching her to make a budget for the grocery order, and perhaps to show her how to go about paying the utility bills. Then jokingly, when she wanted to buy bottle liners to play Mommy with her dolls, we said we should get her to calculate the cost of having a baby. (This was an exercise given to some local high school kids when Dojogirl was just a baby. They were given a list of the supplies needed - diapers, wipes, thermometers, bottles, etc. - and I found a couple of them wandering in the baby department at WalMart jotting down prices on their assignment sheet. They were less than pleased at the time. Dojogirl, on the other hand, loved the idea!)
I’ve been thinking that it might not be a bad idea to extend this assignment to learning about the cost of financing a home. We had earlier considered teaching the girls about looking for an apartment, but ultimately it’s more cost effective to buy a home. I found a great site where the girls can learn a little something about things like mortgage rates in different US states. They can use the site in conjunction with real estate listings, find a house they want to “buy” and then figure out what their monthly costs would be using the on-site mortgage calculator.
Another feature I really liked on this site was that they can select any state in the drop-down menu, and if they scroll down below the listings for the brokers, there are housing statistics that show things like the total number of homes in the state, how many are rural vs. urban, and how many are owned vs. occupied by tenants. You can also see the number of homes for sale or rent. Go further and select a city, and you get the figures just for that city. The table allows you to compare the city, state & national figures. This is a good opportunity to teach mathematics concepts such as percentages and calculating averages. It’s also good for teaching your kids about choosing a good place to start looking for affordable properties - they’ll see from the statistics where properties are likely to be more reasonably priced due to lower demand.
I might also take the time to explain the phenomenon of home equity loans. This is something we never really heard about until a few years ago, and the kids are always seeing commercials for companies that offer this service and asking about it. With an older student this would be a chance to teach amortization, which I believe you’ll find in some of the Ray’s books for middle or high school math (we didn’t deal with it until pre-calculus, I think!) The opposite calculation is to figure out the math for home mortgages. If you’ve done compound interest you might want to give this challenge a try!
These are just a few ideas to get you started. I’m sure you can think of a whole plethora of other angles for a lesson on housing costs. There’s property taxes, heating costs, “green” housing, shopping for furnishings and appliances, home repair and renovations….. These are the kind of things that were reserved just for the grown-ups when we were kids, but I think we would do our kids a service by teaching them about them when they ask. It’s kind of like taking a self-defense class: practicing when there’s no great risk will help them feel more confident when they have to “work without the net.”

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