NGSS
MS-PS1-4
3 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 8 Science · Chapter 1 · Lesson 3
Same particles, different arrangements.
Grade 8 Science · Chapter 1 · Lesson 4
Temperature and Particle Motion
Temperature is a measurement of how fast they move.
Grade 8 Science · Chapter 1 · Lesson 5
Why the thermometer stops while you are still heating.