HS-PS4-2
Evaluate questions about the advantages of using a digital transmission and storage of information.
- Animals
Explainer: Tagging through history
What started as little metal bands have evolved into high-tech devices — some of which rely on satellites to share their findings.
- Tech
Cell phones on the brain
When an active cell phone is pressed against the ear, the brain gets busier.
- Tech
Electronic paper turns a page
Changeable ink and battery-powered paper may make textbooks lighter and bring video newspapers into daily use.
