We discussed misconceptions that were asked in lab from the previous week and from our formative assessment results. We created a timeline and placed major life events on where we thought tIn lab, we started by placing significant life events on a timeline. These events included when dinosaurs roamed the Earth, when humans first appeared, when the moon was created, when the first land animals emerged, and when plants first existed on Earth.
What I Learned in Thursday's Lecture: We took a quiz to answer questions about the weekly textbook reading.
Reflection on the Article/textbook:
This article had a significant impact on how I plan to facilitate science lessons as a future teacher. I noticed many connections to my own experiences and realized how certain practices have hindered my science learning. For example, the article highlighted how college courses often separate concepts taught in lectures from what is done in labs, leaving little connection between the two. As a future educator, I want to ensure my lessons are purposeful and cohesive.
The article also discussed how students often learn procedures for experiments without understanding why they are doing them. I aim to emphasize the "why" behind classroom activities, helping students connect their learning to broader concepts. Rubrics also can be a helpful tool, if they are being used the right way. Rubrics can be helpful to both the teacher and the student so the student can elaborate on what is being graded on. It also benefits the teacher because they can go through and mark off what each student completed, in a specific area. Rubrics are also a good way to offer feedback. Although, rubrics have to be used in a way that they are helpful and deepen learning.
Geologic Time and Earth's History
Earth's History
Earth formed 4.65 billion years ago.
Scientists use the geologic time scale to track major events in Earth's history.
If Earth's history was a clock, humans appeared at 11:59:40 PM, just moments before midnight.
Key Events
4 billion years ago: Simple bacteria were the first life on Earth.
600 million years ago: Plants and animals evolved in water, as it provided stability, movement, and no gravity challenges.
500 million years ago: A major period of evolution called the Cambrian Period occurred.
400 million years ago: Land plants and animals evolved.
65-250 million years ago: Dinosaurs lived during the Mesozoic Era.
200,000–300,000 years ago: Early humans (Homo sapiens) evolved.
Snowball Earth
At least three times, Earth was nearly covered in ice (580–750 million years ago).
This happened due to a "positive feedback loop," where ice reflected sunlight, causing more cooling and ice growth.
Volcanic eruptions eventually released enough carbon dioxide to trap heat and melt the ice.
Pangaea and Continental Drift
250 million years ago: All land was part of a supercontinent called Pangaea.
200 million years ago: Pangaea began breaking apart into the continents we see today.
Scientist Alfred Wegener proposed the continental drift theory, explaining how continents moved based on evidence like matching fossils and land shapes.
Next Steps in Science Learning
Earth's processes, like erosion, plate tectonics, and water systems, happen on timescales from seconds to billions of years.
Water exists in solid (ice) and liquid forms, shaping Earth's surface and supporting ecosystems.
Understanding Earth's systems helps explain patterns in geography, fossils, and climate changes.
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