Premetto che prima di affrontare l’argomento, abbiamo già fatto il lapbook Materials (vedi il post).
STEP 1
Iniziamo con un piccolo BRAINSTORMING:
Metals are natural materials. Which other natural materials do we already know? (vedi altri post: paper, wood, plastic for petroleum,.. ma anche wool, cotton, etc.)
What objects that we use are made of metal?
What are the characteristics and the use of these objects?
STEP 2
Guardiamo insieme la slide sul sito
https://www.dkfindout.com/uk/science/materials/metals/
STEP 3
Riassumiamo e scriviamo sul quaderno le informazioni più importanti.
METALS are NATURAL MATERIALS.
METALS are MINERALS that are found under the ground in ROCKS.
To extract them from under the ground people dig MINES. The men who work in the mines are called the MINERS.
Minerals are separated from the rocks using HEAT.
Metals can be:
PURE MINERALS (found directly in the rocks) or ALLOYS (created by man).
ALLOY = a combination of 2 or more metals or metals and other elements.
Why do we create alloys? ➔ to improve the characteristics of a metal
PURE METALS: IRON – NICKEL – SILVER – GOLD – LEAD (piombo) – COPPER (rame) – ALLUMINIUM
ALLOYS: STEEL – BRONZE – BRASS (ottone)
Accenniamo alla interessante proprietà dei metalli come conduttori di calore e di elettricità: Metals are good conductors of electricity and of heat. ➔ cooking pans and electric wires (per questo argomento vedi il post successivo: Conductors and insulators).
STEP 4
Ora possiamo anche provare a fare il quiz, sempre sul sito
https://www.dkfindout.com/uk/quiz/science/take-amazing-materials-quiz/
STEP 5
Scheda ripasso e/o verifica: Metals REVISION