The disappearance of the dinosaurs at the end of the Cretaceous period posed one of the greatest, long-standing scientific mysteries. This three-act film tells the story of the extraordinary detective work that solved it.
A lesson in which students analyze the chemical data that led researchers to conclude that the K-T boundary layer contained an extraordinary concentration of iridium.
A lesson in which students read a passage and answer questions about the information presented, testing their non-fiction reading comprehension.
A worksheet in which students write down the evidence that led to the discovery that an asteroid struck Earth about 66 million years ago, causing a mass extinction.
A lesson in which students calculate the mass, size, and kinetic energy of the K-T asteroid based on the total abundance of iridium in the K-T boundary layer.
This hands-on activity requires students to “visit” different K-T boundary sites.
The following classroom-ready resources complement The Day the Mesozoic Died, which tells the story of the extraordinary detective work that led to the stunning discovery that an asteroid struck Earth 66 million years ago, triggering a mass extinction of animals, plants and even...
A hands-on activity in which students analyze the results of genetic crosses between stickleback fish with different traits.
A hands-on activity in which students see first-hand the difference in foraminifera fossils below and above the K-T boundary.
A lesson in which students analyze graphs and data on pollen grains and fern spores to form a picture of the living landscape before and after the K-T mass extinction.
A short article by Dr. Sean B. Carroll detailing the discoveries covered in the film The Day The Mesozoic Died.
A worksheet in which students calculate how much iridium was released, and eventually deposited all over the Earth, by the impact of the asteroid that caused the K-T extinction.
Students discuss the short film after a screening at the 2012 Holiday Lectures on Science.
Dr. Lyson describes dinosaur digs as well as his focus on prehistoric turtle fossils.