Can you imagine a tower built out of one million pennies?  How tall would it be?  In this lesson, you will work with your team to predict just how tall such a tower would be.  To make sense of this question, you will measure some pennies and investigate the relationship between the height of a tower of pennies and the number of pennies in that tower.  This is an example of a special relationship called a proportional relationship, which you will learn more about later in this course. How tall would a tower of a million pennies be? Would it be taller than your school building?  Would it be taller than Mount Everest?  Discuss these questions with your team and make a prediction. 

1-25. TINY TOWERS To begin to investigate this question, start by collecting data.  Parts (a) and (b) will lead you through the data-collection process.

  • How many pennies does it take to build a tower that is one centimeter tall?  Use the tools provided by your teacher to answer this question.
  • On your own paper, create a table like the one at right.  Work with your team to complete the missing information.  Be prepared to explain your reasoning to the class.
  • How tall would ONE Million pennies be?

Assignment: 1.1.4 Homework

Prodigy Account Setup If you do not have an existing student account, you can now sign in with your Google account to create one. Follow the steps below to proceed.

Go to and click on "Sign in with Google".


Class Codes

Period 1: D6B0441

Period 4: ED3888F

Period 5: 314A87A

Period 6: 59C930A