# Drip, Drop, Drip, Drop

### Source Institutions

PBS

In this math lesson, learners design an experiment to model a leaky faucet and determine the amount of water wasted due to the leak. Using the data they gather in a table, learners graph and write an equation for a line of best fit. Learners then use their derived equation to make predictions about the amount of water that would be wasted from one leak over a long period of time or the amount wasted by several leaks during a specific time period. [Activity is publicly available through a web crawler capture on Archive.org.]

### Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
45 to 60 minutes

Estimated Materials Cost:
1 cent - \$1 per group of students

Age Range:
Ages 11 - 14

Resource Types:
Activity, Experiment/Lab Activity, Lesson/Lesson Plan, Model

Language:
English

### Materials List (per group of students)

• Timer/stopwatches
• Pitcher or other container of water
• Paper cup and thumbtack/paper clip
• Funnel
• Chart paper and markers

### Subjects

• Mathematics
• Algebra
• Equations and Inequalities
• Patterns
• Variables and Expressions
• Data Analysis and Probability
• Data Analysis
• Data Collection
• Data Representation
• Measurement
• Rate
• Problem Solving
• Representation
• The Nature of Science
• The Scientific Process
• Conducting Investigations
• Gathering Data
• Formulating Explanations
• Communicating Results

### Informal Categories

• Model Building

### Audience

• see
• touch

#### Learning styles supported:

• Involves teamwork and communication skills
• Uses STEM to solve real-world problems
• Involves hands-on or lab activities

• Free access