[Carnegie Mellon University] Think-aloud math study for high school students

Hi everyone,

We are a research group from Carnegie Mellon University that develops and tests software to help high school students become flexible math problem-solvers. We’re interested in your math learning experiences!

You will take part in a Remote Think-Aloud activity, which includes several math-related tasks, such as problem-solving, worked-example walk-through, reflection, and some follow-up questions. These activities will be conducted on paper (and will be shown to us via web camera/photo) or online collaborative canvas tools. We will collect your draft work and audio recordings. These activities are totally voluntary, would take about an hour of time, and you may choose to stop at any time.

Here is one example problem that we may use in the activity:

A number is called a decreasing number if it has two or more digits and each digit is smaller than the digit to its left. For example 74217421, 964310964310 and 5252 are all decreasing numbers but 34213421, 66426642, 88 and 963212963212 are not. How many decreasing numbers are there?

To take part in the study, you have to be between 14-17 years old and studying in the US. We offer a $25 gift certificate for participating.

Your participation means a lot to us. If you have any question or would like to sign up, please send an email to:

Professor Bruce McLaren, Principal Investigator, Carnegie Mellon University



Note by Anh Huy Nguyen
2 weeks, 6 days ago

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What about in the UK? I am in the UK and after reading your note, I am interested. I study in the UK as well. I am 15 years, 2 weeks and 4 days old. @Anh Huy Nguyen

A Former Brilliant Member - 2 weeks, 5 days ago

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Hi, I just got reply from my professor. Unfortunately we can only interview students in the US :(

Anh Huy Nguyen - 2 weeks, 3 days ago

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Ok. Thanks for letting me know! @Anh Huy Nguyen

A Former Brilliant Member - 2 weeks, 3 days ago

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I read your article and am interested in testing mathematical thinking and developing software necessary for further use by high school students. This will be useful as I am a teacher and strive to adapt my students' learning.

Zoe Lambert - 2 weeks, 1 day ago

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@Brilliant Mathematics, @Charles Chandler has posted a comment not related to mathematics.

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Thanks. We will take action on this account shortly.

Brilliant Mathematics Staff - 2 weeks ago

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@Brilliant Mathematics, @Zoe Lambert has only one comment, I think she is a bot...

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Hi Yajat, it doesn't appear to be so.

Brilliant Mathematics Staff - 2 weeks ago

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