# A low-tech unit studying quadrilaterals

In an effort to be better at sharing quality basic stuff that works, here’s how I teach quadrilaterals:

I am hesitant to share the files that I use because I’ve borrowed them from all over the interwebs and at this point I don’t even know where to give credit, but here they are!

[10/11/16 update: Most of this came from Elissa Miller. You can find even more awesome geometry resources on her blog.]

I usually start by having students deduce the properties of parallelograms using an old fashioned ruler and protractor. This is because I’ve noticed that students could use the practice. I know there are a lot of quadrilateral discovery activities on Geogebra, but I still think it is occasionally important to practice using different tools.

After this task, I usually have students complete this checklist measuring, discussing and comparing properties of rhombi, squares, rectangles and  parallelograms.

After these investigations and discussions, students work in pairs to complete an Always Sometimes & Never discussion of quadrilaterals, described here.

Students also complete the task Complete the quadrilateral developed by Don Steward as described by Fawn Nguyen. This year, I adapted this task into a Desmos activity.

I also include some basic quadrilateral practice, like this assignment. It is just a good, basic, practice that helps expose student conceptions & understanding.

## 9 thoughts on “A low-tech unit studying quadrilaterals”

1. […] get-the-job-done, quality materials (a girl after my own note-taker-maker heart). Check out her quadrilateral collection. (BTW, if you interested in more materials like these, be sure to check out the comments on […]

2. misscalcul8 says:

All these are mine but I honestly can’t remember if I made them or stole them as well. Carry on! 🙂

• Lisa Bejarano says:

Well then thank you!! I’ll edit the post to give you credit.

3. Help! The link to these files is broken. Any chance you can repost?

Thank you!

• Lisa Bejarano says:

I am so excited that you visit my blog!!!

The links should all be fixed now. Thank you for letting me know.

• THANK YOU SO MUCH!!!

(PS I visit your blog all the time! Besides for never shutting up, which is my avocation, I teach two sections of geometry each year.)

4. @mrsdillmath says:

I noticed the comments from last January mentioned the links not working. You had responded saying they were working, but I am having difficulty opening the links today. Is there anyway you could either email me the files or update the links again? Thank you! I am new to your blog, but I am working to make my two geometry classes as “discovery-driven” as possible, especially when it comes to theorems and properties of quadrilaterals. Thank you!

• Lisa Bejarano says:

Argh! Links updated. Thank you for letting me know!

• @mrsdillmath says:

Thank you! I am very excited to use these resources as we begin our quadrilateral unit. Thank you for your help!