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Broken Calculator


Broken Calculator

Logo for Broken Calculator
Presents a calculator with only a few numbers and functions that work, and asks the user to generate the numbers 1-15 with the limited functionality. On the same page is an article about the use of calculators when teaching math, and about innumberacy in general.
Material Type: Simulation
Technical Format: Java Applet
Date Added to MERLOT: April 14, 2002
Date Modified in MERLOT: February 04, 2006
Submitter: Martha Pitcher


  • Reviewed by members of Editorial board for inclusion in MERLOT.
    Editor Review (not reviewed)
  • User review 4 average rating
  • User Rating: 4 user rating
  • Discussion (3 Comments)
  • Learning Exercises (none)
  • Bookmark Collections (3)
  • Course ePortfolios (none)
  • Accessibility Info (none)

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Primary Audience: Middle School, High School, College General Ed, Graduate School, Professional
Mobile Compatibility: Not specified at this time
Technical Requirements: Java-enabled browser
Language: English
Cost Involved: no
Source Code Available: no
Accessiblity Information Available: no
Creative Commons: unsure


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Discussion for Broken Calculator

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Avatar for Julie Schmitt
12 years ago

Julie Schmitt (Student)

I am a college student and future teacher of mathematics. I spent about a half
an hour reviewing the site and material it had to offer. I believe calculators
are sometimes overused at a lower level, and yet they can be helpful tools at
higher levels. I enjoyed the concepts presented, and used the broken calculator
to my pleasure. I think this would be an appropriate learning tool.

Technical Remarks:

First time users will find it easy to use the software whether they are familiar
with computers or not.
Used in course

Avatar for Jim Hansel
13 years ago

Jim Hansel (Student)

I'am currently a college student. I review the site for about 60 minutes. I
played with the broken caculator for a while. Once you start with the caculator
before you know it an hour went by. This site would be a good educational tool.

Technical Remarks:

The site was easy to navigate and to use the site you don't have to be a
computer master. Overall the site was organized well.

Avatar for   Chavez
13 years ago

Chavez (Faculty)

I am currently a college student. I viewed the website for about a half hour.
I used the site for two reasons: the first was the read out calculators and
there affect in the class room and secondly to play the broken calculator game.
The material was very easy to use and understand. I believe the material was
very educational and would be a great teaching tool for students. I would show
them how students use to do math with out a calculator.

Technical Remarks:

The material was very easy to use. The calculator was broken but that was the
point of the site. I had no problems with the navigational links. To use the
material in the site you don't need any outside assistance. Overall this site
was well organized.