## June 2015

# Number line algebra

### by Bret Victor

An interactive representation of the algebraic equation

3x + 14 = 5x + 6

The orange boxes are "x". Adjust until the two rows are the same lengtth.

06/25/15

Toby Schachman

Re: [journal][long] proceedings of the interaction design conference

I'm not sure how I feel about this. I like it a lot but it bugs me that...

06/25/15

Dave Cerf

Re: [journal][long] proceedings of the interaction design conference

Here are proportionally accurate versions revealing that 6 is a bit larger than x. To...

06/25/15

Paula

Re: [journal][long] proceedings of the interaction design conference

oh, i didn't even notice that x is not actually 6. ha. I apologize for not showing...

06/26/15

Bret Victor

Re: [journal][long] proceedings of the interaction design conference

Here's a quick interactive version of the number line algebra thing....