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How Big is Your Heart?

Source Institutions

    NCTM Illuminations

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How Big is Your Heart?

This lesson emphasizes the connections between science and mathematics by using a performance, or authentic, assessment format. Learners examine the relative size of the heart and discover that the dimensions of the fist are related to those of the heart. Making predictions and models is an integral component of this lesson.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
45 to 60 minutes

Estimated Materials Cost:
1 cent - $1 per student

Age Range:
Ages 4 - 8

Resource Types:
Activity, Lesson/Lesson Plan, Model


Materials List (per student)


  • Life Sciences
    • Human Body
      • Circulation
  • Mathematics
    • Data Analysis and Probability
      • Data Collection
    • Measurement
      • Units of Measurement
      • Size and Scale
    • Representation
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Gathering Data

Informal Categories

  • Model Building


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Includes alignment to state and/or national standards

Common Core State Standards for Mathematics:

Access Rights:

  • Free access



  • All Rights Reserved, National Council of Teachers of Mathematics, ©2008

Funding Source:

  • Thinkfinity/Verizon Foundation


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