Introduction

### **Signs of Change** datasets and activities empower students to discover important events in US History - events such as the Civil War, the Great Migration, the Rise of Women in the Workforce, the Baby Boom, and many others - by enabling them to explore US Census Data from 1850 - 2000. ;;br ### **Signs of Change** is a unique opportunity to bring mathematics concepts and ideas into the history classroom.

In this Collection, Students Will

### 1. Use data evidence to write a detailed argument supporting or refuting claims about the evolution of family structure in the 20th century ### 2. Compare gender and racial profiles in California's population in the Gold Rush era using stretched bar charts ### 3. Analyze data on economic change in the US to track spurts and overall trends over time

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