Materials Similar to NPR: Ancient Trees Show When Earth's Magnetic Field Last Flipped Out
- 35%: Context Rich Problems Online Archives: Magnetic Force and Field Problems
- 30%: IOPSpark: Many students are unable to accurately represent a magnetic field using field lines
- 30%: Arbor Scientific: Earth Itself is a Huge Magnet
- 27%: Magnetic Force Three Wires Model
- 26%: NASA Science Casts: Earth's Magnetosphere
- 26%: IOPSpark: Some students conflate magnetic and electrostatic effects
- 25%: Magnetic Fields
- 25%: Supporting Conceptual Understanding of Fields: A Review of the Research
