Skip to main content

Popular posts from this blog

3D thinking - early and often!

I'm guessing that if you grew up around the same time I did, you experienced a similar progression. Master the 2 dimensional shapes and their measurements (perimeter and area) and then move on to the 3 dimensional shapes and their measurements. Throughout this process, at least in my elementary years, I'm fairly certain not a single elementary teacher I had in front of me had a degree (major or minor) in mathematics. So they did what they'd always done, show some pictures in books and talk about formulas and calculations. Once we made the leap to 3D though, my brain really struggled to "see" what was on the paper as taking up space - even with the paper nets we cut and taped into 3D objects. Do you suffer from the same affliction I do?  I can't say that my parents didn't ask me to do this often enough or not, but I certainly needed some more practice!  Don't shy away from letting your child do this kind of spatial thinking. Have them order containers s...
Post a Comment
Read more

There's HOW MANY ways to add 2 numbers?

To answer the title question - a LOT! We take for granted that most of us adults can add quickly because we "know our math facts".  For many of us that may be true, but I would bet that the vast majority of adults out there do quite a few of the addition strategies your children are taught in elementary school without even knowing it! This video addresses some of the addition strategies that I've seen frustrating parents.  Addition Video As always, let me know if there's a topic you'd like to see Demystified! 
Post a Comment
Read more

New Problems Require New Solutions

Ah yes, I'm sure we've all seen this or similar postings around the internet - the famous "too smart for elementary school" parent who's really "showing those teachers". The problem I see here is a parent who despite his MANY years of education, failed. He failed to read directions. He failed to answer the question being asked. Without knowing what grade level this problem is aimed at (I'm assuming 1st or 2nd grade), the problem here is not that "math has changed". The problem is that the problems have changed. This highly educated parent (and many of those educated as much or less who see and share this) all fail to see that the question is NOT 427-316 = ??? Instead, the question is demonstrating a method of subtraction (more on that strategy here ) and asking what went wrong for the student. It's about error analysis. I bet if Mr. Engineer Dad had seen the problem labeled Error Analysis his chest would've puffed with p...
Post a Comment
Read more