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Back-of-the-Envelope Calculations: Percentage of Copper in Ore
Barb Tewksbury, Hamilton College
Question Suppose that you are building a new house. It will take about 90 kg (198 pounds) of copper to do the electrical wiring. In order to get the copper in the first place, someone needs to mine solid rock that ...

Independent Samples t-Test: Chips Ahoy® vs. Supermarket Brand
Dexter Whittinghill, Rowan University
In this hands-on activity, students count the number of chips in cookies in order to carry out an independent samples t-test to compare Chips Ahoy® cookies and a supermarket brand. It can involve discussion of randomness and independence of samples, comparing two parameters with null and alternative hypotheses, and the practical issues of counting chips in a cookie.

Shirley Alt
This activity helps students develop better understanding and stronger reasoning skills about distributions in terms of center and spread. Key words: center, spread, distribution

Using Your Hair to Understand Descriptive Statistics
Christopher Malone, Winona State University
The purpose of this activity is to enhance students’ understanding of various descriptive measures in statistics. In particular, students will gain a visual understanding of means, medians, quartiles, and boxplots without doing any computations by completing this activity.

An In-Class Experiment to Estimate Binomial Probabilities
Jessica Utts, University of Califronia, Davis
This hands-on activity asks students to conduct a binomial experiment and calculate a confidence interval for the true probabiity. It is useful for involving students, and for having a discussion about the interpretation of confidence intervals and the role of sample size in estimation.

Seeing and Describing the Predictable Pattern: The Central Limit Theorem
Shirley Alt, University of Minnesota-Duluth
This activity helps students develop a better understanding and stronger reasoning skills about the Central Limit Theorem and normal distributions. Key words: Sample, Normal Distribution, Model, Distribution, Variability, Central Limit Theorem (CLT)

Simple vs. Compound Interest -- Spreadsheeting the Difference
Gary Franchy, Southwestern Michigan College
Spreadsheets Across Curriculum module. Students build spreadsheets to tabulate, graph and compare the future value of investments with compound vs. simple interest. Spreadsheet level: beginner.

Calzones vs. Mini-Pizzas -- A Linear Programming Problem
J. M. Pogodzinski
Spreadsheets Across the Curriculum module. Students build a spreadsheet to find the combination of mini-pizzas and calzones that maximizes revenue given constraints on labor time and baking time.

The Digital Divide: A Data Analysis Activity Using Subtotals
Maryann Allen, Colby-Sawyer College
Spreadsheets Across the Curriculum module. Students analyze a given data set to understand the "Digital Divide" by means of percentages and the Subtotal tool in Excel.

Creating a Household Budget
Sara Baldwin, South Seattle Community College
Spreadsheets Across the Curriculum module. Students track their expenses and use Excel to compare them to Seattle/Tacoma averages. Developed for adult students taking English as a Second Language.