Bell Work

Social Security Numbers

The Social Security system used in the United States today is based on nine digits; it was first started in 1936. Ask your students how many people can be assigned a Social Security number before there is repetition.

Answer: 1 billion (10^9)

More Bell Work Ideas

Using A Compass
Greatest Explorer
The Magic Square
Candy Sorting
Puzzle Pieces
Summer Fun
What is Fall?
Hand Sketch
Fraction of a Day
Coin Sorting
Explorer Timelines
Circumference of Student Circle
Halloween Probability
Easter Poetry
The Mariana Trench
Pumpkin Seed Estimation
The Missing Dollar
Max Temp
The Perfect Gift
Simon Says
What Does Columbus Symbolize?
Beans in the Bag
The Mood of Artwork
Where in the World?
One Food Only
The Presidents’ Faces
Tongue Twisters
Letter Art
What Could It Be?
Temperatures Around the World
Common Eye Color
Guess the Ages
Opinion and Fact Statements
Learn About Explorers
Don’t Lift Your Pencil
Olympic Cities
Description Addition
Shapes Around the Room
Number Pyramid
Population Make-up
Class Percentages
Antonym Pairing
"If" Response
The Word "Thanksgiving"
Bean Estimation
Fast Food Chain
Ferdinand Magellan’s Voyage