Biography

• Napier’s Timeline
• Countdown Challenge: Time Line
• Comparing a Number Line to a Time Line
• Creating a Number Line
• A Family Tree
• Countdown Activity: Napier’s Ancestors
• Napier’s Family Tree
• Tracing Generations
• Your Ancestors
• Mary Somerville
• Intro to Benjamin Banneker
• Benjamin Banneker: Quick Facts

Geography

• Flag Symmetry
• Latitude and Longitude Basics
• Countdown Activity: Money
• Currency Design
• Converting Currency on the Computer
• Calculating Discounts on the Computer
• Calculating Population Rate
• Calculating the Population Density
• Calculating the Area of Scotland
• The Underground Railroad
• Routes on the Underground Railroad
• Estimating Distance on the Underground Railroad: Part 1
• Estimating Distance on the Underground Railroad: Part 2
• Estimating Distance on the Underground Railroad: Part 3
• Intro “The Librarian of Basra”

Invention

• History of Metric vs Customary System
• The Invention of the Decimal
• Intro to Napier’s Rods
• Using Napier’s Rods: Part 1
• Using Napier’s Rods: Part 2
• Logarithms: Intro
• Multiplication Using Logs
• Division Using Logs
• Grandfather of the Computer?
• Exploring Punch Cards
• Punch Cards: Part 1
• Punch Cards: Part 2
• Exploring Scale on the Computer
• Gear Ratio: Part 1
• Gear Ratio: Part 2
• Why are there 360º in a circle?