NGSS
HS-ESS1-5
2 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Earth and Space Science · Chapter 4 · Lesson 1
Relative Dating and Stratigraphy
Order without numbers is still knowledge.
Earth and Space Science · Chapter 4 · Lesson 5
Reading a Stratigraphic Column
The gaps are part of the record.