Does It Have to Touch?

by: Page Keeley and Rand Harrington

The purpose of this assessment probe is to elicit beginning ideas about types of forces. The probe is designed to reveal whether students recognize that forces can act both in direct contact with an object and at a distance.

NSTA Press produces classroom-ready activities, hands-on approaches to inquiry, relevant professional development, the latest scientific education news and research, assessment and standards-based instruction.

Learn More