What is the oldest form of technology still being used in teaching today?

(1 point)
chalkboard
slide rule
abacus
overhead projector

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
10 days ago

The oldest form of technology still being used in teaching today is the abacus. While various other tools have evolved significantly, the abacus has been in use for thousands of years and is still utilized in some educational settings to teach arithmetic and basic math skills.