Comparing Mobile Phone Chargers
Use this interactive file to understand how graphs can be used to compare charges of different phone networks. Learn the effect that a fixed charge and a per-minute charge have on the overall cost.
Instructions:
- Use in conjunction with the corresponding student activity.
- Drag the sliders to change the fixed charge and the cost-per-minute of a phonecall for Network A and Network B.
- Drag the red dot to find the total cost of a phone bill as the number of minutes increases.
Reflection:
Complete the accompanying student activity sheet.
