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How to Make a Three Square Unfolding Book

Updated on June 12, 2015

How to Make an "Exploding" Minibook

This is a tiny book that opens up BIG. In fact, it's so big that some people call it an explosion book or a squash book!

Okay, I'm not going to lie. This minibook is a bit difficult to make because it involves some origami folds. BUT it's really cool! You take three squares of the same size, any size will do, and end up with a book that when closed is only one fourth of the size of one of the squares. That's a tiny book with lots of room for writing.

Fill the three square unfolding book with pictures or text; it's totally up to you. Use this minibook in a lapbook, or let it stand alone as a one day project. Make some blank books and hand them to your child on a long car trip. He will love the action of the pages!

Step by Step Directions for Making the Three Square Unfolding Book

Folding the Three Squares

You need three squares of the same size. And each one is to be folded in the same way. This fold is called the preliminary base in origami. So, let's tackle that base first.

You fold your square in half and then in half again from the other direction.

Open the square. Then turn your paper over so that the previous folds are now mountain folds. Then fold the square diagonally one time.

This is what your paper now looks like -- a horizontal fold, a vertical fold, and one diagonal fold.So the folds now divide your paper into two small squares and four triangles.

Next comes the tricky part. You are doing to place the two squares on top of each other and tuck the triangles into the center between them. I've drawn red stars on the corners that need to meet.

If you'd like a printable diagram, click here for a PDF. Or if you'd like to see another series of photos, visit these Origami Instructions.

So, to check your base, when you open the corner, this is what you see--two pointy tips.

And under that, another square.

Help with the Base

Not quite there yet? Watch this video. It's painfully slow, but forward to your trouble spot and it's sure to help you see the process.

Putting the Bases Together

After you've created three of the bases, you're ready to affix them together to make the entire minibook.

Although I usually use cardstock for all of our minibooks, I find that 80-100 g paper is great for this project (that is, thinner than cardstock). Because of all the folds, cardstock is too bulky.

Unfold the squares and notice the diagonal fold. Of course, the folds are the same for each square, but depending on how you hold the paper, the fold can be sticking up -- a mountain fold-- or the fold can be poking down -- a valley fold.

This is how you line them up. Place one square with the (diagonal) valley fold up in the center of your work area.

Then put the other two squares, mountain fold up on top of the first square, overlapping as shown in the photo below.

Glue the overlapping squares, matching them very precisely for the best opening and closing action.

Grasp the far most upper corner and bring it down, folding the squares just as the individual bases were folded before.

You're done! Now go fill it up with fun pictures and writing.

For a tutorial video about how to make this book, visit Science Notebooking, a blog written by an elementary public school teacher who uses minibooks in her students' science notebooks.

Squash Book

More Paper Folding Fun

Have you ever made a flag book?

See results

An exploding book about how sound travels.

Three Square Unfolding Book Variations

Make super tiny books with smaller squares, mega books with huge squares.

Vary colors of paper.

Use ribbon to tie the book closed.

The book can open up, down, or even sideways. Try different orientations.

Use four squares instead of three for an even thicker book.

Reader Feedback

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    • RoadMonkey profile image


      7 months ago

      What a fascinating idea. I read some stuff on origami when I was a child but it was too complex to work out myself and no one else was interested in helping. Your description is very clear and I love the idea of writing different things on different parts.

    • profile image

      Minnie Mouse 

      4 years ago

      Thanks great tutorial!

    • fifta profile image


      7 years ago

      Love this! I just recently started to gather lapbooking resources and your lens really helps me to make another style of book. Thanks!

    • flycatcherrr profile image


      8 years ago

      This looks like so much fun - did you ever think of making one for a Valentine card? Too late for me to start much tonight (zzzz), but I'm definitely going to tackle this little project tomorrow!

    • profile image


      8 years ago

      I saw this made at a church retreat and have the instructions, but this really halped to clarify how it was done. Thanks for the great instruction. On the one that I saw done, they added ribbon to hold it together, which I have not figured out how to add. I am now going to attempt to have my 5th - 8th grade craft club make some for our craft fair.

    • sushilkin lm profile image

      sushilkin lm 

      8 years ago

      Nice Lens, Thanks for sharing. Keep it up.

    • niicki profile image


      8 years ago

      This looks awesome - something I'm going to have to try with my son who is really into origami.

    • Mickie Gee profile image

      Mickie Gee 

      8 years ago

      Love this idea for making an exploding book. Read on and up.

    • deldobuss profile image


      9 years ago

      Ooh! I will have to try this book! Thank you!

    • profile image


      11 years ago

      Terrific how to instructions here. I love pop-up books and have added this lens to my favorites. 5*'s from me!


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