Standards Alignment
- 2-ESS1-1 primary
Use information from several sources to provide evidence that Earth events can occur quickly or slowly.
View 30 supporting standards
- TEKS.SC.2.01A supporting
ask questions and define problems based on observations or information from text, phenomena, models, or investigations; - TEKS.SC.2.01B supporting
use scientific practices to plan and conduct simple descriptive investigations and use engineering practices to design solutions to problems; - TEKS.SC.2.01C supporting
identify, describe, and demonstrate safe practices during classroom and field investigations as outlined in Texas Education Agency-approved safety standards; - TEKS.SC.2.01D supporting
use tools, including hand lenses, goggles, heat-resistant gloves, trays, cups, bowls, beakers, notebooks, stream tables, soil, sand, gravel, flowering plants, student thermometer, demonstration thermometer, rain gauge, flashlights, ramps, balls, spinning tops, drums, tuning forks, sandpaper, wax paper, items that are flexible, non-flexible items, magnets, hot plate, aluminum foil, Sun-Moon-Earth model, and frog and butterfly life cycle models to observe, measure, test, and compare; - TEKS.SC.2.01E supporting
collect observations and measurements as evidence; - TEKS.SC.2.01F supporting
record and organize data using pictures, numbers, words, symbols, and simple graphs; and - TEKS.SC.2.01G supporting
develop and use models to represent phenomena, objects, and processes or design a prototype for a solution to a problem. - TEKS.SC.2.02A supporting
identify basic advantages and limitations of models such as their size, properties, and materials; - TEKS.SC.2.02B supporting
analyze data by identifying significant features and patterns; - TEKS.SC.2.02C supporting
use mathematical concepts to compare two objects with common attributes; and - TEKS.SC.2.02D supporting
evaluate a design or object using criteria to determine if it works as intended. - TEKS.SC.2.03A supporting
develop explanations and propose solutions supported by data and models; - TEKS.SC.2.03B supporting
communicate explanations and solutions individually and collaboratively in a variety of settings and formats; and - TEKS.SC.2.03C supporting
listen actively to others' explanations to identify important evidence and engage respectfully in scientific discussion. - TEKS.SC.2.04A supporting
explain how science or an innovation can help others; and - TEKS.SC.2.04B supporting
identify scientists and engineers such as Alexander Graham Bell, Marie Daly, Mario Molina, and Jane Goodall and explore what different scientists and engineers do. - TEKS.SC.2.05A supporting
identify and use patterns to describe phenomena or design solutions; - TEKS.SC.2.05B supporting
investigate and predict cause-and-effect relationships in science; - TEKS.SC.2.05C supporting
measure and describe the properties of objects in terms of size and quantity; - TEKS.SC.2.05D supporting
examine the parts of a whole to define or model a system; - TEKS.SC.2.05E supporting
identify forms of energy and properties of matter; - TEKS.SC.2.05F supporting
describe the relationship between structure and function of objects, organisms, and systems; and - TEKS.SC.2.05G supporting
describe how factors or conditions can cause objects, organisms, and systems to either change or stay the same. - TEKS.SC.2.09A supporting
describe the Sun as a star that provides light and heat and explain that the Moon reflects the Sun's light; and - TEKS.SC.2.09B supporting
observe objects in the sky using tools such as a telescope and compare how objects in the sky are more visible and can appear different with a tool than with an unaided eye. - TEKS.SC.2.10A supporting
investigate and describe how wind and water move soil and rock particles across the Earth's surface such as wind blowing sand into dunes on a beach or a river carrying rocks as it flows; - TEKS.SC.2.10B supporting
measure, record, and graph weather information, including temperature and precipitation; and - TEKS.SC.2.10C supporting
investigate different types of severe weather events such as a hurricane, tornado, or flood and explain that some events are more likely than others in a given region. - TEKS.SC.2.11A supporting
distinguish between natural and manmade resources; and - TEKS.SC.2.11B supporting
describe how human impact can be limited by making choices to conserve and properly dispose of materials such as reducing use of, reusing, or recycling paper, plastic, and metal.
Companion Video Lesson
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Lesson Overview
This Grade 2 science lesson helps students understand that Earth events can occur at different speeds—some happen quickly, like earthquakes and volcanic eruptions, while others happen slowly, like erosion. Students will gather information from various sources, observe models and examples, and use evidence to explain these differences. The lesson integrates NGSS and TEKS standards focused on Earth systems and scientific practices.
Learning Objectives
- Use information from multiple sources to provide evidence that Earth events can occur quickly or slowly.
- Ask questions and make observations about Earth events based on text, models, and investigations.
- Plan and conduct simple investigations to explore Earth events and their timing.
- Use tools and models to observe, measure, and represent Earth events.
- Collect and organize data to support explanations about Earth events.
- Communicate explanations using evidence from observations and sources.
Success Criteria
- Students can identify examples of Earth events that happen quickly and slowly.
- Students use evidence from at least two different sources to explain the timing of Earth events.
- Students participate in investigations and use tools safely to observe Earth processes.
- Students record observations and organize data using drawings, words, or simple graphs.
- Students explain their reasoning clearly and listen respectfully to others' explanations.
Prerequisite Knowledge
Students should understand basic Earth features such as land, water, and rocks, and have experience making observations and asking questions about natural phenomena.
Key Vocabulary
- Earth event
- volcanic eruption
- earthquake
- erosion
- evidence
- model
- observation
- investigation
- quick
- slow
Materials and Resources
- Books and videos about Earth events (volcanoes, earthquakes, erosion)
- Pictures or diagrams showing fast and slow Earth events
- Simple models or simulations (e.g., sand and water to show erosion)
- Observation tools (hand lenses, notebooks, pencils)
- Chart paper or whiteboard for recording data
- Safety equipment (goggles, gloves)
Teacher Preparation
- Gather multiple sources of information about Earth events, including books, videos, and images.
- Prepare simple models or demonstrations to show fast and slow Earth processes.
- Set up observation stations with necessary tools and safety equipment.
- Prepare chart paper or digital tools for recording student observations and data.
- Review safety procedures for investigations and model use.
Detailed Lesson Notes
Understanding Earth Events and Their Timing
Earth events are natural processes that change the Earth's surface. Some events happen quickly, such as volcanic eruptions and earthquakes, which can occur suddenly and cause rapid changes. Other events happen slowly over time, like erosion, where wind or water gradually wears away rocks and soil. Understanding the timing of these events helps us learn how the Earth changes and why some changes are noticeable immediately while others take a long time.
Using Multiple Sources to Gather Evidence
To understand Earth events, students should use information from several sources. These can include books, videos, pictures, and models. Each source provides different types of evidence, such as descriptions, images, or demonstrations. By comparing information from multiple sources, students can build a stronger explanation about how and when Earth events happen.
Scientific Practices in Investigating Earth Events
Students will engage in scientific practices such as asking questions, making observations, planning and conducting simple investigations, and using tools safely. For example, they might observe a model of erosion using sand and water to see how soil moves slowly. They will collect observations and record data using drawings or words. These practices help students develop explanations based on evidence.
Models and Tools to Represent Earth Processes
Models are simplified representations of real-world processes. In this lesson, models such as a sand and water table can show erosion happening slowly. Pictures or diagrams can illustrate fast events like earthquakes. Students should understand that models have advantages, like making invisible processes visible, but also limitations, such as not showing exact timing or scale. Using tools like hand lenses helps students observe details closely.
Communicating and Explaining Evidence
Students will practice explaining their ideas about Earth events using evidence from their observations and sources. They will learn to listen to others' explanations and identify important evidence in discussions. Clear communication helps students build scientific understanding collaboratively and respect different viewpoints.
Worked Examples
Worked Example 1
Scenario
A student watches a video of a volcanic eruption and reads a book about erosion. The video shows lava flowing quickly and explosions happening suddenly. The book explains that erosion happens when wind and water slowly wear away rocks over many years. How can the student use this information to explain whether Earth events happen quickly or slowly?
Explanation
The student can explain that some Earth events, like volcanic eruptions, happen quickly because the video shows sudden explosions and fast lava flow. Other events, like erosion, happen slowly because the book describes a gradual wearing away of rocks over a long time. Using both sources provides evidence that Earth events can occur at different speeds.
Answer Guide
Earth events can happen quickly, like volcanic eruptions that happen suddenly, or slowly, like erosion that takes many years. The video and book together show these differences.
Engage
Teacher Activity
Show students pictures and short video clips of different Earth events, such as a volcanic eruption, an earthquake, and erosion of rocks over time. Ask students to describe what they see and how quickly they think each event happens.
Student Activity
Students watch the videos and look at pictures, then share their ideas about which events happen quickly and which happen slowly.
Explanation
This phase activates prior knowledge and introduces the concept that Earth events can occur at different speeds. Visuals help students notice differences in timing.
Examples
- Students identify volcanic eruptions and earthquakes as fast events.
- Students recognize erosion as a slow process.
- Students ask questions about why events happen at different speeds.
Explore
Teacher Activity
Provide students with books, pictures, and simple models to investigate Earth events. Guide them to observe and collect information about how quickly these events happen. For example, use a sand and water model to show erosion over time.
Student Activity
Students explore the materials, make observations, and record notes or drawings about each Earth event and its timing.
Explanation
Hands-on exploration allows students to gather evidence from multiple sources and make observations to support their understanding.
Examples
- Students note that erosion in the model happens slowly.
- Students find descriptions or images showing volcanic eruptions and earthquakes happen quickly.
- Students record observations using drawings or words.
Explain
Teacher Activity
Lead a class discussion where students share their findings about Earth events. Help students use evidence from their observations and sources to explain which events happen quickly and which happen slowly.
Student Activity
Students explain their ideas using evidence, listen to others, and ask questions to clarify understanding.
Explanation
This phase helps students construct explanations supported by evidence and practice scientific communication.
Examples
- Students use examples from models, pictures, and texts to support their explanations.
- Students engage respectfully in discussion and ask questions.
Elaborate
Teacher Activity
Introduce a simple investigation where students predict and observe how water moves soil particles in a tray to simulate erosion. Guide students to collect data and compare their observations with earlier sources.
Student Activity
Students conduct the investigation, record observations, and compare results with information from books and models.
Explanation
This phase extends learning by applying concepts to new situations and reinforcing evidence-based explanations.
Examples
- Students observe soil particles moving slowly with water flow.
- Students record data and relate it to previous observations and sources.
Evaluate
Teacher Activity
Ask students to restate the main idea in their own words and provide evidence from at least two sources to support their explanation that Earth events can occur quickly or slowly.
Student Activity
Students share their explanations and evidence orally or in writing.
Explanation
This phase assesses students' ability to use evidence from multiple sources to explain Earth events' timing.
Examples
- Students correctly identify fast and slow Earth events.
- Students cite evidence from models, texts, or investigations to support their explanations.
Classroom Activity
Students explore the materials, make observations, and record notes or drawings about each Earth event and its timing.
Guided Practice
Guided Practice 1
Prompt
Name one Earth event that happens quickly and one that happens slowly.
Teacher Answer Guide
A volcanic eruption happens quickly, and erosion happens slowly.
Guided Practice 2
Prompt
How can looking at pictures and reading books help you learn about how fast Earth events happen?
Teacher Answer Guide
Pictures and books show what happens during Earth events and explain if they happen fast or slow, helping me understand their timing.
Guided Practice 3
Prompt
If you see a model where water slowly moves sand in a tray, what kind of Earth event does this model represent, and is it fast or slow?
Teacher Answer Guide
This model represents erosion, which is a slow Earth event because the water moves the sand gradually over time.
Guided Practice 4
Prompt
A student says earthquakes and erosion both happen quickly because they change the land. How would you explain using evidence that this is not correct?
Teacher Answer Guide
I would explain that earthquakes happen quickly because they cause sudden shaking, but erosion happens slowly as wind or water gradually wears away rocks. Evidence from videos and books shows the difference in timing.
Guided Practice 5
Prompt
Using information from a video about a volcanic eruption and a book about erosion, write a short explanation with evidence about why Earth events can happen at different speeds.
Teacher Answer Guide
Earth events can happen quickly or slowly. For example, a volcanic eruption happens quickly because the video shows sudden explosions and lava flowing fast. Erosion happens slowly because the book explains that wind and water wear away rocks over many years. These sources provide evidence that Earth events happen at different speeds.
Independent Practice
- Foundational: Name one Earth event that happens quickly and one that happens slowly.
- Developing: How can looking at pictures and reading books help you learn about how fast Earth events happen?
- Application: If you see a model where water slowly moves sand in a tray, what kind of Earth event does this model represent, and is it fast or slow?
- Analysis: A student says earthquakes and erosion both happen quickly because they change the land. How would you explain using evidence that this is not correct?
- Challenge: Using information from a video about a volcanic eruption and a book about erosion, write a short explanation with evidence about why Earth events can happen at different speeds.
Independent Practice Teacher Answer Key
- 1. A volcanic eruption happens quickly, and erosion happens slowly.
- 2. Pictures and books show what happens during Earth events and explain if they happen fast or slow, helping me understand their timing.
- 3. This model represents erosion, which is a slow Earth event because the water moves the sand gradually over time.
- 4. I would explain that earthquakes happen quickly because they cause sudden shaking, but erosion happens slowly as wind or water gradually wears away rocks. Evidence from videos and books shows the difference in timing.
- 5. Earth events can happen quickly or slowly. For example, a volcanic eruption happens quickly because the video shows sudden explosions and lava flowing fast. Erosion happens slowly because the book explains that wind and water wear away rocks over many years. These sources provide evidence that Earth events happen at different speeds.
Guiding Questions
- What are some examples of Earth events that happen quickly?
- What are some examples of Earth events that happen slowly?
- How can we use different sources to learn about Earth events?
- Why is it important to use evidence when explaining what we observe?
- How do models help us understand Earth processes?
Common Misconceptions
- All Earth events happen quickly because they change the land.
- Erosion is not an Earth event because it happens slowly and is not noticeable.
- Models show exactly how Earth events happen in real life, including exact timing and size.
- Only one source of information is enough to explain Earth events.
Differentiation
Support and Intervention
Provide sentence starters to help students explain their ideas. Use picture cards to illustrate fast and slow Earth events. Allow students to work in pairs to discuss observations.
English-Language Learner Support
Use simple language and visuals to explain Earth events. Provide bilingual books or videos if available. Encourage students to use gestures and drawings to express ideas.
Advanced and Extension
Challenge students to compare more Earth events and explain differences in timing. Have students create their own models to show fast or slow events. Encourage students to research a local Earth event and present findings.
Assessment
- Observe student participation in discussions and investigations.
- Check students' recorded observations and explanations for use of evidence.
- Ask guiding questions to assess understanding during activities.
- Name one Earth event that happens quickly and one that happens slowly.
- Explain why you think a volcanic eruption is a fast Earth event using evidence.
- Write a short paragraph using information from two sources to explain that Earth events can happen quickly or slowly.
- Create a simple model or drawing showing a fast Earth event and a slow Earth event and explain each.
Answer Guide
- Name one Earth event that happens quickly and one that happens slowly.
Answer: A volcanic eruption happens quickly, and erosion happens slowly. - How can looking at pictures and reading books help you learn about how fast Earth events happen?
Answer: Pictures and books show what happens during Earth events and explain if they happen fast or slow, helping me understand their timing. - If you see a model where water slowly moves sand in a tray, what kind of Earth event does this model represent, and is it fast or slow?
Answer: This model represents erosion, which is a slow Earth event because the water moves the sand gradually over time. - A student says earthquakes and erosion both happen quickly because they change the land. How would you explain using evidence that this is not correct?
Answer: I would explain that earthquakes happen quickly because they cause sudden shaking, but erosion happens slowly as wind or water gradually wears away rocks. Evidence from videos and books shows the difference in timing. - Using information from a video about a volcanic eruption and a book about erosion, write a short explanation with evidence about why Earth events can happen at different speeds.
Answer: Earth events can happen quickly or slowly. For example, a volcanic eruption happens quickly because the video shows sudden explosions and lava flowing fast. Erosion happens slowly because the book explains that wind and water wear away rocks over many years. These sources provide evidence that Earth events happen at different speeds.
Real-Life Application
Encourage families to talk about Earth events they have experienced or heard about, such as storms or changes in the landscape, and discuss whether those events happened quickly or slowly. Families can watch videos or read books together about Earth events to support learning.
Homework or Home Connection
- Encourage families to talk about Earth events they have experienced or heard about, such as storms or changes in the landscape, and discuss whether those events happened quickly or slowly. Families can watch videos or read books together about Earth events to support learning.
Lesson Summary
Students learned that Earth events can happen at different speeds. Some events, like volcanic eruptions and earthquakes, happen quickly and cause rapid changes. Others, like erosion, happen slowly over time. By using information from books, videos, models, and investigations, students gathered evidence to explain these differences. They practiced scientific skills such as observing, asking questions, using tools safely, recording data, and communicating explanations based on evidence.
Teacher Notes
Use the exact standards alignment and retrieved-source provenance stored with this enrichment.