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Grade: 2

Lesson 50: Material Science & Metal — Iron

PLL Part Two
Blacksmith Working Glowing Iron on Anvil
Classical Inquiry • Iron
“Tell something that is made of iron. How does the iron feel? When you try to lift it, what would you say it is? Where do we get iron? Of what use is it?”
Material Science Focus: Physical properties (hard, cold, heavy) • Iron mining & metallurgy • The blacksmith forge • Industrial utility.
1 Physical Properties & Origin
Observe the physical qualities of iron. Answer each question on the handwriting lines.
1. Touch: How does a piece of unheated iron feel to your fingers?
2. Weight: When you try to lift a block of iron, what would you say it is?
3. Origin: Where do we get iron? Dug from deep within the
4. Iron Objects: Name two common things made of iron:
2 Science Detective: The Forge & Fire
Discover how humans shape such a hard metal into useful tools.
A. The Magic of Heat: What happens to hard iron when heated in a blacksmith's glowing coals?
It becomes red-hot and so it can be hammered into shape.
B. The Blacksmith's Anvil: Why must an anvil be made of heavy iron?
To withstand the heavy blows of the without breaking.
3 The Essential Utility of Iron
In two complete sentences, explain why iron is one of the most useful metals on earth. Mention buildings, trains, or tools.
Sentence 1:
Sentence 2:
4 Material Comparison Challenge
Why would a wooden hammer or paper nail not work? Explain the special strength of iron.
Iron Strength:
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