Sort rock origins
Sort rock origins using supplied evidence and a solved model.
About 18 minutes, plus any extended practice
Open lesson 1Rocks, Fossils and Earth History
Use Earth records while distinguishing evidence from inference.
Before you begin
- Read or listen to supplied scientific descriptions and follow a labeled diagram.
- Use addition, subtraction and the stated measurement units.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Interpret a fossil observation
Interpret a fossil observation using supplied evidence and a solved model.
About 18 minutes, plus any extended practice
Open lesson 2Order undisturbed sediment layers
Order undisturbed sediment layers using supplied evidence and a solved model.
About 18 minutes, plus any extended practice
Open lesson 3Use several Earth-history clues
Use several Earth-history clues using supplied evidence and a solved model.
About 18 minutes, plus any extended practice
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.
Topic references
- NGSS topic reference: topic reference — Rocks, Fossils and Earth History; original supplementary instruction, not a certified alignment claim.
These references informed the topic selection. They do not certify complete standards alignment.