A B C 

• 

A clean rock roughly the size of an egg

• 

Beakers marked with milliliters

• 

Tinfoil

• 

Fine sand or rice (optional)

• 

Two-pan balance and three-arm balance scale (optional)

• 

Calculator (optional)

Part A Notes:

Comparing Rocks

Part B Notes:

Which Rock Is the Largest?

Part C Notes:

Nonstandard Units

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