# Activities

• ##### Download

• • ##### Subject Area

• Math: Elementary Math: Probability, Statistics and Data Analysis

• ##### Author K-5

60 Minutes

• ##### Device
• TI-10
• TI-15 Explorer™
• ##### Other Materials
This is Activity 25 from the EXPLORATIONS Book:
Uncovering Math with Manipulatives, the TI-10, and the TI-15 Explorer

The following materials are required for this activity:
• Number cubes
• Pencils

## Analyzing Number Cube Sums

#### Activity Overview

Students extend their understanding of theoretical probability and patterns. They use number cubes, to build awareness that a fraction and its decimal and percent representation on the calculator are "close," but not necessarily equal.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity
• Print student activity sheet page 121 from the attached PDF for your class
• #### During the Activity

Distribute the page to the class.

Follow the activity procedures:

• Roll two number cubes and represent the results as fractions, decimals, and percents
• Examine the experimental probabilities
• Record all the ways of rolling two number cubes to get each possible sum of 2 through 12
• Record the theoretical probability of each sum in fraction, decimal, and percent
• Understand what the numerator and denominator used in the calculation represent
• Investigate the sum of all the fractional probabilities, the sum of all the decimal representations, and the sum of all the percents
• Analyze the results
• #### After the Activity

• Review student results
• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary