Weighing the Evidence

How many pennies are in a mystery roll? Finding the answer involves variables.

Subject: Algebra; Problem Solving
Topics:
- Variables
- Patterns and Functions
- Look for a Pattern
Grades: 6 - 8
Concepts:
- Variable
Knowledge and Skills:

- Can explain the reasoning used to solve a problem
- Can evaluate whether an answer to a problem is sensible in the context of the problem
- Can estimate an answer to a problem to determine if the calculated answer is reasonable
-
Understands the concept "variable"
- Can identify and describe patterns in a collection of related numerical data

Download Activity: Weighing the Evidence (PDF)

Hands-On Math Movie:

The First American CoinsThe First American Coins

Steve Contursi owns the first gold coin minted in the US. It's worth 6 million dollars. But numismatists like Steve don’t just collect coins—they also collect their stories. From the meaning behind the term "two-bits" to Martha Washington's silverware, the stories of our money are rich in history and math!
Running time 5:55 minutes.

Watch the Movie