Act One:

The world record for the tallest structure made of Legos was recently set in Seoul, South Korea.  Check out the pictures and video below:

How much do you estimate that it costs for only the materials, to build this tower?

What other questions do you have?

Act Two: What information do you need











Here are some Lego prices from Amazon that you can use to figure this out.

As you come to an estimate, make sure that you show your thinking and process so that it is clear to other.  Teachers - you may consider having students create posters that show how they came to an estimate or consider showing different ideas through a document camera.

Act Three: Possible Solutions


For members we have an editable Word doc and solutions.

Lego.doc          Lego-solutions.pdf

CCSS: 4.OA.4,  5.NBT.5, 6.RP.3, 6.NS.2, 7.NS.3

Pictures from,,,


4 comments for “Legos

  1. Mona Wexler
    August 25, 2013 at 12:53 am

    I am having some trouble with the editable word docs. When I click, “enable editing” to make changes, the document disappears and instead shows the Yummy Math homepage as a Word doc.

    • August 25, 2013 at 9:52 am

      Mona, can you email us about this if still not working? You can find our email through the about us page. Sorry for the trouble.

  2. Mark Kreie
    April 16, 2013 at 12:11 pm

    Video link no longer works… this one might.

    • April 16, 2013 at 4:51 pm

      Thank you, Mark. Your link didn’t work either … but I found one that did. Thank you for letting us know. Leslie

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