A friend of mine was shopping at Walmart the other day and sent me this picture. I decided it was a great picture to show my students. I tell my students daily, “check your answer- does it make sense?” “Use your estimating skills” If your answer doesn’t make sense, then we made an error with our math – case in point this picture!
Apparently its more common than I realized. When I looked up real world math mistakes, I found a ton! There was even an article written for the Huffington Post that showed several errors. Click here to see it.
I think I will make a slide show for my kids to see…. Might help drive home the point of always check your work and why it’s important in a very interesting way.