In this activity, students will explore the concept of density and use it to distinguish between pennies minted in different years.

• Identify counterfeit coins based on the characteristic property of density.
• Model data using a linear equation.
• Interpret the slope and intercept values from a linear model.
• Identify a characteristic property of a substance.

• In this data-gathering activity, students will identify counterfeit coins based on the characteristic property of density.
• Students will collect data using the Vernier EasyLink™ or TI-Nspire Lab Cradle with the Vernier Dual-Range Force Sensor.
• The student activity sheet and .tns file contain the complete instructions for data collection. All assessment questions are also included in both places giving you the flexibility to either collect the .tns files with student data/answers (using TI-Nspire Navigator) or the student activity sheet.