NGSS
MS-ESS1-1
5 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 6 Science · Chapter 1 · Lesson 2
It is the tilt, not the distance.
Grade 6 Science · Chapter 1 · Lesson 3
Half the Moon is always lit.
Grade 6 Science · Chapter 1 · Lesson 4
Why not every month?
Grade 6 Science · Chapter 1 · Lesson 5
Two a day, and one of them on the wrong side.