The K-Pg Extinction Event
Describe the Cretaceous–Palaeogene (K-Pg) extinction event approximately 66 million years ago, including the asteroid impact theory and its evidence (iridium layer, Chicxulub crater), and understand that this ended the reign of non-avian dinosaurs
Teaching approaches
Gakuva’s recommended starting approach is selected. You can still compare every option.
1 approach
Can your child explain what scientists think caused the dinosaurs to go extinct — and describe at least one piece of evidence for the asteroid theory?
Describe the Cretaceous–Palaeogene (K-Pg) extinction event approximately 66 million years ago, including the asteroid impact theory and its evidence (iridium layer, Chicxulub crater), and understand that this ended the reign of non-avian dinosaurs
Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
No reviewed resources for this concept yet.
The teaching approach above still stands. Curated practice links — and later lock-ranked options — will appear here as the shelf fills.
Explore the learning path
2 before · 2 after
This concept
Check understanding
- State that the K-Pg extinction happened about 66 million years ago and wiped out non-avian dinosaurs
- Describe the asteroid impact hypothesis and name the Chicxulub crater in Mexico
- Explain one piece of evidence: the iridium-rich layer found worldwide in rocks from that time
“Can your child explain what scientists think caused the dinosaurs to go extinct — and describe at least one piece of evidence for the asteroid theory?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Dinosaurs & Paleontology
- Age range
- Ages 9–11