Skip to content

Algetiles

October 24, 2016

We are starting to talk about integers and variables, and algetiles are a great tool to use to help the concepts become less abstract.

We call the little red squares 1, and the little blue squares -1.  We looked at how a red square and a blue square together would cancel each other out to make zero.

When we start talking about variables, the long rectangles represent a positive and negative x.  Before long we were adding binomials: here is (2x+4)+(-3x+1).

We can simplify the expression and cancel out some of the terms by matching up pairs of zeros.

We will be using algetiles a lot over the next 2 years.

No comments yet

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

%d bloggers like this: