Much Ado About Distribution, Dept.

traditional math

A common complaint–as in “see, math is being taught wrong”– is that students fail to see that equations like 3(x-5)=60 can be solved by dividing both sides by 3 first. Progressives seem to make a big deal about this to the tune of “If students are doing this, they lack ‘deeper understanding’ about equations.

Textbooks that claim alignment to the Common Core now make it a practice to show this.  The problem is that if you have 7(x-5)=60, the process isn’t so neat.

In my experience students ignore the lesson and go ahead and distribute.  I point out that they can do it the short-cut way (since all the problems in this particular lesson are structured so that the short cut can be used), but they still do the “long-way” distribution method. At first I was worried when students were not “getting” it, until I realized I was succumbing to the…

View original post 156 more words

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s