# OpenStax_CNX

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# 0 to 1 math testing

Module by: Angela Chen. E-mail the author

Summary: This document tests use of non-breaking spaces, and super and subscripts set in Word.

## 0 to 1, or Never to Always

### Intent

In this activity, students work with probabilities expressed as fractions, percentages, and decimals.

### Mathematics

Students continue to focus on the distinction between probability based on a theoretical model and probability based on observed results and on measuring probability using a real-number scale from 0 to 1.

### Progression

Earlier in the unit, students estimated the probability of given events. In this activity, they invent situations that match a given probability.

### Approximate Time

5 minutes for introduction

25 minutes for activity (at home or in class)

10 minutes for class discussion

### Classroom Organization

Individuals or pairs, followed by whole-class discussions

### Doing the Activity

Clarify that students are to invent two situations for each question, one based on theoretical probability and the other on observed results. Let's test a link to Keypress.com by clicking here.

1. Here is an equation with a non-breaking space: x + y = z
2. Here is a test of subscripts and superscripts: x2 + y2 = z1 + z2

### Discussing and Debriefing the Activity

If students have worked individually, ensure that there is time for them to compare their invented situations. Question 5 is included to give students an opportunity to consider an impossible situation.

### Key Questions

Does it matter whether probabilities are written as fractions, decimals, or percents?

Why is the smallest probability 0?

Why is the largest probability 1?

What does a probability of 2.3 imply?

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