Learning Target:
Students will be able to identify some significant historical floods and analyze their impact on human society and the environment.
Materials Needed:
The Journey of Little Pebble đâ°ī¸
On a plain near a towering mountain, a little pebble named Pebbly lay on the ground. He had once been part of a strong rock, but weathering had broken him down into a tiny piece.
One stormy night, heavy rain poured down. đ§ī¸đĻ The water rushed over the land, carrying Pebbly away. This was erosion! đ The water tumbled him down the mountain, where he met other small rocks.
“Where are we going?” Pebbly asked.
“The river is taking us somewhere new! This is deposition!” said Rocky, another small stone.
The water carried them toward the ocean. But as they reached the shore, a giant tsunami đ crashed in, sweeping Pebbly even farther. He spun and tumbled, feeling dizzy as the wave carried him inland.
The next morning, Pebbly found himself in a new landâa flooded city. Buildings were underwater, and people were climbing onto rooftops for safety. đ đĻ
“This flood is because of climate change,” an old turtle explained. “Rising temperatures make storms stronger, causing more flooding.”
Suddenly, dark clouds swirled in the sky. A tornado đĒī¸ twisted down, ripping through the land. Pebbly saw trees uprooted and roofs torn away. “Nature is powerful,” he thought.
Days passed, and the floodwaters receded. Pebbly settled onto a sandy shore, where he would rest until weathering began breaking him down even more.
Pebblyâs journey showed him that Earth is always changingâthrough physical weathering, chemical weathering, erosion, and deposition. But he also saw how climate change made storms and floods worse.
âI may be small,â Pebbly thought, âbut even I can be part of something big.â đđ
Vocabulary:
Weathering: is the process of breaking down rocks and minerals into smaller pieces.
Chemical weathering: is the breakdown of rocks and minerals through chemical reactions
Physical weathering: is the mechanical breakdown of rocks into smaller pieces without changing the chemical composition.
Erosion: The process of wearing away Earthâs surface by wind, water or ice.
Deposition: is the process of depositing sediment, rock or other material in a new location.
A landform: is a natural feature of the Earthâs surface.
Tornado: a violently rotating column of air extending from a thunderstorm to the ground.
Tsunami: a giant wave in the ocean caused by an underwater earthquake landslide or volcanic eruption. These waves can travel very fast and cause widespread destruction when they reach the shore.
đ Earth Science & Geography Quiz (Weathering, Erosion, Climate Change)
- What type of weathering occurs when acid rain dissolves limestone?
a) Physical weathering
b) Chemical weathering
c) Deposition
d) Erosion - Which natural disaster is caused by an underwater earthquake?
a) Tornado
b) Tsunami
c) Hurricane
d) Flood - Name a landform that can be created by deposition.
a) River delta
b) Tornado
c) Mountain
d) Plain - Which of these human activities increases climate change and flooding?
a) Planting trees
b) Using fossil fuels
c) Recycling plastic
d) Conserving water
I learned that, country mouse rode on the bus to go in the city.
i learn that count my mouse pode on The bus to go in the City .
I learn that country mouse ride on the bus to inthe city
I learned that Country Mouse rOde on the Bus to go in the City.
đ English Vocabulary Quiz (Use the words in sentences)
- Fill in the blank:
- The process of breaking down rocks and minerals into smaller pieces is called __.
- Choose the correct word:
- After the hurricane, sand and rocks were carried to a new location. This is an example of:
a) Weathering
b) Deposition
c) Earthquake
d) Tornado
- Write a short paragraph using at least three of the following words: erosion, tsunami, mountain, plain, climate change.
â Math & Science Quiz (Real-World Problem Solving)
- A flood spreads across 200 square miles. If the water level rises by 3 feet per hour, how high will it be in 4 hours?
- A tornado travels 30 miles in 15 minutes. What is its speed in miles per hour?
- A rock breaks down into four equal pieces every 10 years due to weathering. If a rock starts as 256 grams, how much will remain after 30 years?
đ§ Bonus Challenge: Critical Thinking
đą How does climate change affect weathering and erosion? Write a short paragraph explaining how rising temperatures and extreme weather impact natural landforms. đ
âĸ Graphic organizers for group work
Lesson Steps:
1. Starter (Activate background knowledge) â 10 minutes
Hook: Show images or short video clips of major floods (e.g., 1931 China floods, 2005 Hurricane Katrina, 2024 Bangladesh floods).
Discussion Questions: What do you see in these images? How do you think floods affect people and nature? Have you or anyone you know ever experienced a flood? What happened?
2. Direct Instruction â 20 minutes
âĸ Definition of Floods: Explain what floods are and their causes (heavy rainfall, storm surges, dam failures, etc.).
âĸ Types of Floods: Coastal floods, river floods, flash floods, and urban flooding.
âĸ Historical Floods & Their Impact:
âĸ 1931 China Floods â Deadliest flood in history, causing famine, disease outbreaks, and displacement.
âĸ Hurricane Katrina (2005, USA) â Severe urban flooding, infrastructure damage, and government response.
âĸ 2024 Bangladesh Floods â Manmade disaster, Environmental destruction, agricultural loss, and mass displacement.
âĸ Visual Learning: Use a world map to locate these floods and analyze their long-term effects.
3. Group Activity â 20 minutes
âĸ Divide students into small groups.
âĸ Each group researches a historical flood (assigned from a list) and fills out a chart:
âĸ Year & Location
âĸ Causes
âĸ Social & Environmental Impact
âĸ Government & Human Response
âĸ Groups present their findings to the class.
4. Independent Practice â 15 minutes
âĸ Writing Reflection: Students answer:
âĸ What do historical floods teach us about disaster preparedness?
âĸ What strategies can help reduce flood impacts today?
âĸ Extension Activity (Optional): Research and compare a historical flood with a recent one.
5. Assessment â 10 minutes
âĸ Exit Ticket:
âĸ Name one major historical flood and describe its impact on society or the environment.
âĸ Homework:
âĸ Write a one-page report on how climate change is influencing modern flooding events.
This lesson engages students through visual media, discussion, research, and writing, ensuring a deep understanding of historical floods and their lasting impact.
Read in Bangla language.
āĻŦāĻŋāĻā§āĻāĻžāύ āĻĒāĻžāĻ āĻĒāϰāĻŋāĻāϞā§āĻĒāύāĻž: āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻž āĻāĻŦāĻ āĻāϰ āĻĒā§āϰāĻāĻžāĻŦ
āĻļāĻŋāĻā§āώāĻžāϰ āϞāĻā§āώā§āϝ:
āĻļāĻŋāĻā§āώāĻžāϰā§āĻĨā§āϰāĻž āĻāĻŋāĻā§ āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻž āĻāĻŋāĻšā§āύāĻŋāϤ āĻāϰāϤ⧠āĻĒāĻžāϰāĻŦā§ āĻāĻŦāĻ āĻŽāĻžāύāĻŦ āϏāĻŽāĻžāĻ āĻ āĻĒāϰāĻŋāĻŦā§āĻļā§āϰ āĻāĻĒāϰ āϤāĻžāĻĻā§āϰ āĻĒā§āϰāĻāĻžāĻŦ āĻŦāĻŋāĻļā§āϞā§āώāĻŖ āĻāϰāϤ⧠āĻĒāĻžāϰāĻŦā§āĨ¤
āĻĒā§āϰāϝāĻŧā§āĻāύā§āϝāĻŧ āĻāĻĒāĻāϰāĻŖ:
âĸ āĻĒā§āϰāϧāĻžāύ āĻŦāύā§āϝāĻžāϰ āĻāĻŦāĻŋ/āĻāĻŋāĻĄāĻŋāĻ
âĸ āĻŦāĻŋāĻļā§āĻŦ āĻŽāĻžāύāĻāĻŋāϤā§āϰ
âĸ āĻāĻŦā§āώāĻŖāĻžāϰ āĻšā§āϝāĻžāύā§āĻĄāĻāĻāĻ āĻŦāĻž āĻĄāĻŋāĻāĻŋāĻāĻžāϞ āĻĄāĻŋāĻāĻžāĻāϏ
âĸ āĻā§āϰā§āĻĒ āĻāĻžāϰā§āϝāĻā§āϰāĻŽā§āϰ āĻāύā§āϝ āĻā§āϰāĻžāĻĢāĻŋāĻ āϏāĻāĻāĻ āĻ
āĻĒāĻžāĻ ā§āϰ āϧāĻžāĻĒāϏāĻŽā§āĻš:
ā§§. āϏā§āĻāύāĻž (āĻāĻāϰā§āώāĻŖ āĻ āϏāĻāϝā§āĻ) â ā§§ā§Ļ āĻŽāĻŋāύāĻŋāĻ
âĸ āĻšā§āĻ: āĻĒā§āϰāϧāĻžāύ āĻŦāύā§āϝāĻžāϰ (āϝā§āĻŽāύ ā§§ā§¯ā§Šā§§ āϏāĻžāϞā§āϰ āĻā§āύāĻž āĻŦāύā§āϝāĻž, ⧍ā§Ļā§Ļā§Ģ āϏāĻžāϞā§āϰ āĻšāĻžāϰāĻŋāĻā§āύ āĻā§āϝāĻžāĻāϰāĻŋāύāĻž, ⧍ā§Ļā§§ā§Ļ āϏāĻžāϞā§āϰ āĻĒāĻžāĻāĻŋāϏā§āϤāĻžāύā§āϰ āĻŦāύā§āϝāĻž) āĻāĻŦāĻŋ āĻŦāĻž āϏāĻāĻā§āώāĻŋāĻĒā§āϤ āĻāĻŋāĻĄāĻŋāĻ āĻĻā§āĻāĻžāύā§āĨ¤
âĸ āĻāϞā§āĻāύāĻžāϰ āĻĒā§āϰāĻļā§āύ:
âĸ āĻāĻ āĻāĻŦāĻŋāĻā§āϞā§āϤ⧠āϤā§āĻŽāĻŋ āĻā§ āĻĻā§āĻāϤ⧠āĻĒāĻžāĻā§āĻā§?
âĸ āϤā§āĻŽāĻŋ āĻāĻŋ āĻŽāύ⧠āĻāϰā§, āĻŦāύā§āϝāĻž āĻŽāĻžāύā§āώ āĻ āĻĒā§āϰāĻā§āϤāĻŋāϰ āĻāĻĒāϰ āĻā§ āĻĒā§āϰāĻāĻžāĻŦ āĻĢā§āϞā§?
âĸ āϤā§āĻŽāĻŋ āĻāĻŋ āĻāĻāύ⧠āĻŦāύā§āϝāĻžāϰ āĻ āĻāĻŋāĻā§āĻāϤāĻž āĻĒā§āϝāĻŧā§āĻā§ āĻŦāĻž āĻāĻžāĻāĻā§ āĻĒā§āϝāĻŧā§āĻā§ āĻŦāϞāϤ⧠āĻļā§āύā§āĻā§? āĻā§ āĻāĻā§āĻāĻŋāϞ?
⧍. āϏāϰāĻžāϏāϰāĻŋ āĻĒāĻžāĻ āĻĻāĻžāύ â ⧍ā§Ļ āĻŽāĻŋāύāĻŋāĻ
âĸ āĻŦāύā§āϝāĻžāϰ āϏāĻāĻā§āĻāĻž: āĻŦāύā§āϝāĻž āĻā§ āĻāĻŦāĻ āĻāϰ āĻāĻžāϰāĻŖ (āĻ āϤāĻŋāĻŦā§āώā§āĻāĻŋ, āĻāĻĄāĻŧā§āϰ āĻĒā§āϰāĻāĻžāĻŦ, āĻŦāĻžāĻāϧ āĻā§āĻā§ āϝāĻžāĻāϝāĻŧāĻž āĻāϤā§āϝāĻžāĻĻāĻŋ) āĻŦā§āϝāĻžāĻā§āϝāĻž āĻāϰāĻžāĨ¤
âĸ āĻŦāύā§āϝāĻžāϰ āϧāϰāύ: āĻāĻĒāĻā§āϞā§āϝāĻŧ āĻŦāύā§āϝāĻž, āύāĻĻā§āϰ āĻŦāύā§āϝāĻž, āĻšāĻ āĻžā§ āĻŦāύā§āϝāĻž, āĻāĻŦāĻ āĻļāĻšā§āϰ⧠āĻŦāύā§āϝāĻžāĨ¤
âĸ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻž āĻāĻŦāĻ āϤāĻžāĻĻā§āϰ āĻĒā§āϰāĻāĻžāĻŦ:
âĸ ā§§ā§¯ā§Šā§§ āϏāĻžāϞā§āϰ āĻā§āύāĻž āĻŦāύā§āϝāĻž â āĻāϤāĻŋāĻšāĻžāϏā§āϰ āϏāĻŦāĻā§āϝāĻŧā§ āĻāϝāĻŧāĻžāĻŦāĻš āĻŦāύā§āϝāĻž, āϝāĻž āĻĻā§āϰā§āĻāĻŋāĻā§āώ, āϰā§āĻāĻŦā§āϝāĻžāϧāĻŋ āĻāĻŦāĻ āĻŦā§āϝāĻžāĻĒāĻ āĻŦāĻžāϏā§āϤā§āĻā§āϝā§āϤāĻŋ āĻāĻāĻžāϝāĻŧāĨ¤
âĸ ⧍ā§Ļā§Ļā§Ģ āϏāĻžāϞā§āϰ āĻšāĻžāϰāĻŋāĻā§āύ āĻā§āϝāĻžāĻāϰāĻŋāύāĻž (āϝā§āĻā§āϤāϰāĻžāώā§āĻā§āϰ) â āύāĻāϰ āĻŦāύā§āϝāĻž, āĻ āĻŦāĻāĻžāĻ āĻžāĻŽā§āĻāϤ āĻā§āώāϤāĻŋ āĻāĻŦāĻ āϏāϰāĻāĻžāϰāĻŋ āĻĒā§āϰāϤāĻŋāĻā§āϰāĻŋāϝāĻŧāĻž āύāĻŋāϝāĻŧā§ āĻŦāĻŋāĻļā§āϞā§āώāĻŖāĨ¤
âĸ ⧍ā§Ļā§§ā§Ļ āϏāĻžāϞā§āϰ āĻĒāĻžāĻāĻŋāϏā§āϤāĻžāύā§āϰ āĻŦāύā§āϝāĻž â āĻĒāϰāĻŋāĻŦā§āĻļāĻāϤ āϧā§āĻŦāĻāϏ, āĻā§āώāĻŋāĻā§āώā§āϤā§āϰ⧠āĻā§āώāϤāĻŋ āĻāĻŦāĻ āϞāĻā§āώ āϞāĻā§āώ āĻŽāĻžāύā§āώā§āϰ āĻŦāĻžāϏā§āϤā§āĻā§āϝā§āϤāĻŋāĨ¤
âĸ āĻāĻŋāĻā§āϝā§āϝāĻŧāĻžāϞ āϞāĻžāϰā§āύāĻŋāĻ: āĻŦāĻŋāĻļā§āĻŦ āĻŽāĻžāύāĻāĻŋāϤā§āϰ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰ⧠āĻāĻ āĻŦāύā§āϝāĻžāĻā§āϞā§āϰ āĻ āĻŦāϏā§āĻĨāĻžāύ āĻāĻŋāĻšā§āύāĻŋāϤ āĻāϰāĻž āĻāĻŦāĻ āϤāĻžāĻĻā§āϰ āĻĻā§āϰā§āĻāĻŽā§āϝāĻŧāĻžāĻĻā§ āĻĒā§āϰāĻāĻžāĻŦ āĻāϞā§āĻāύāĻž āĻāϰāĻžāĨ¤
ā§Š. āĻā§āϰā§āĻĒ āĻāĻžāϰā§āϝāĻā§āϰāĻŽ â ⧍ā§Ļ āĻŽāĻŋāύāĻŋāĻ
âĸ āĻļāĻŋāĻā§āώāĻžāϰā§āĻĨā§āĻĻā§āϰ āĻā§āĻ āĻā§āĻ āĻĻāϞ⧠āĻŦāĻŋāĻāĻā§āϤ āĻāϰāĻžāĨ¤
âĸ āĻĒā§āϰāϤāĻŋāĻāĻŋ āĻĻāϞāĻā§ āĻāĻāĻāĻŋ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻž āĻāĻŦā§āώāĻŖāĻžāϰ āĻāύā§āϝ āĻĻā§āĻāϝāĻŧāĻž āĻšāĻŦā§ āĻāĻŦāĻ āϤāĻžāϰāĻž āύāĻŋāĻā§āϰ āĻāĻžāϰā§āĻ āĻĒā§āϰāĻŖ āĻāϰāĻŦā§:
âĸ āĻŦāĻāϰ āĻ āϏā§āĻĨāĻžāύ
âĸ āĻāĻžāϰāĻŖāϏāĻŽā§āĻš
âĸ āϏāĻžāĻŽāĻžāĻāĻŋāĻ āĻ āĻĒāϰāĻŋāĻŦā§āĻļāĻāϤ āĻĒā§āϰāĻāĻžāĻŦ
âĸ āϏāϰāĻāĻžāϰāĻŋ āĻ āĻŽāĻžāύāĻŦ āĻĒā§āϰāϤāĻŋāĻā§āϰāĻŋāϝāĻŧāĻž
âĸ āĻĻāϞāĻā§āϞ⧠āϤāĻžāĻĻā§āϰ āĻāĻŦā§āώāĻŖāĻžāϰ āĻĢāϞāĻžāĻĢāϞ āĻļā§āϰā§āĻŖāĻŋāĻāĻā§āώ⧠āĻāĻĒāϏā§āĻĨāĻžāĻĒāύ āĻāϰāĻŦā§āĨ¤
ā§Ē. āϏā§āĻŦāϤāύā§āϤā§āϰ āĻ āύā§āĻļā§āϞāύ â ā§§ā§Ģ āĻŽāĻŋāύāĻŋāĻ
âĸ āϞāĻŋāĻāĻŋāϤ āĻĒā§āϰāϤāĻŋāĻĢāϞāύ: āĻļāĻŋāĻā§āώāĻžāϰā§āĻĨā§āϰāĻž āύāĻŋāĻā§āϰ āĻĒā§āϰāĻļā§āύāĻā§āϞā§āϰ āĻāϤā§āϤāϰ āϞāĻŋāĻāĻŦā§:
âĸ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻžāĻā§āϞ⧠āĻāĻŽāĻžāĻĻā§āϰ āĻĻā§āϰā§āϝā§āĻ āĻĒā§āϰāϏā§āϤā§āϤāĻŋ āϏāĻŽā§āĻĒāϰā§āĻā§ āĻā§ āĻļā§āĻāĻžāϝāĻŧ?
âĸ āĻŦāύā§āϝāĻžāϰ āĻĒā§āϰāĻāĻžāĻŦ āĻāĻŽāĻžāύā§āϰ āĻāύā§āϝ āĻā§ āĻā§ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž āύā§āĻāϝāĻŧāĻž āϝā§āϤ⧠āĻĒāĻžāϰā§?
âĸ āĻ āϤāĻŋāϰāĻŋāĻā§āϤ āĻāĻžāϰā§āϝāĻā§āϰāĻŽ (āĻāĻā§āĻāĻŋāĻ): āĻāĻāĻāĻŋ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻžāϰ āϏāĻžāĻĨā§ āĻāĻāĻāĻŋ āϏāĻžāĻŽā§āĻĒā§āϰāϤāĻŋāĻ āĻŦāύā§āϝāĻžāϰ āϤā§āϞāύāĻžāĻŽā§āϞāĻ āĻāĻŦā§āώāĻŖāĻž āĻāϰāĻžāĨ¤
ā§Ģ. āĻŽā§āϞā§āϝāĻžāϝāĻŧāύ â ā§§ā§Ļ āĻŽāĻŋāύāĻŋāĻ
âĸ āĻĒā§āϰāϏā§āĻĨāĻžāύ āĻāĻŋāĻāĻŋāĻ:
âĸ āĻāĻāĻāĻŋ āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻžāϰ āύāĻžāĻŽ āϞāĻŋāĻā§ āϏā§āĻāĻŋāϰ āϏāĻžāĻŽāĻžāĻāĻŋāĻ āĻŦāĻž āĻĒāϰāĻŋāĻŦā§āĻļāĻāϤ āĻĒā§āϰāĻāĻžāĻŦ āĻŦāϰā§āĻŖāύāĻž āĻāϰā§āĨ¤
âĸ āĻā§āĻšāĻāϰā§āĻŽ:
âĸ āĻāϞāĻŦāĻžāϝāĻŧā§ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻā§āĻāĻžāĻŦā§ āĻāϧā§āύāĻŋāĻ āĻŦāύā§āϝāĻžāϰ āĻāĻāύāĻžāĻā§ āĻĒā§āϰāĻāĻžāĻŦāĻŋāϤ āĻāϰāĻā§ āϏ⧠āĻŦāĻŋāώāϝāĻŧā§ āĻāĻ āĻĒā§āώā§āĻ āĻžāϰ āĻĒā§āϰāϤāĻŋāĻŦā§āĻĻāύ āϞāĻŋāĻā§āĨ¤
āĻāĻ āĻĒāĻžāĻ āĻļāĻŋāĻā§āώāĻžāϰā§āĻĨā§āĻĻā§āϰ āĻāĻŋāĻā§āϝā§āϝāĻŧāĻžāϞ āĻŽāĻŋāĻĄāĻŋāϝāĻŧāĻž, āĻāϞā§āĻāύāĻž, āĻāĻŦā§āώāĻŖāĻž, āĻāĻŦāĻ āϞā§āĻāĻžāϰ āĻŽāĻžāϧā§āϝāĻŽā§ āϏāĻŽā§āĻĒā§āĻā§āϤ āĻāϰāĻŦā§, āϝāĻž āĻāϤāĻŋāĻšāĻžāϏāĻŋāĻ āĻŦāύā§āϝāĻž āĻāĻŦāĻ āϤāĻžāĻĻā§āϰ āĻĻā§āϰā§āĻāĻŽā§āϝāĻŧāĻžāĻĻā§ āĻĒā§āϰāĻāĻžāĻŦ āϏāĻŽā§āĻĒāϰā§āĻā§ āĻāĻā§āϰ āĻŦā§āĻāĻžāϰ āϏā§āϝā§āĻ āĻĻā§āĻŦā§āĨ¤
I learned That country mouse rode on the bus to go in the city.