Array Weighing Activity Balance scales

We finally have precise balance scales with metal weights which have 0.2 g. sensitivity. Balance (or a pair of scales) uses a balance beam and compares masses by balancing the weight due to the mass of an object against the weight of a known mass or masses. Adrian will attempt to do both:

• compare masses by balancing the weight of an object against the weight of a known mass (i.e. metal weights have its mass stated on them)
• compare masses by balancing the weight of autumn objects against the weight of an UN-known mass: nature-objects on the other side of the scale.

Practicing the pincer grip.

This activity is also a fun way to introduce 🔢fact families: for example 50 gr on one side=20+10+10+5+5 gr.

After some trial and error, Adrian was able to use and balance all the metal weights: coming up with a combination that is not identical on each side.

Comparing masses by balancing the weight of known masses (metal weights).

What about figuring out how objects of unknown mass weight (pebbles or stones) can come to equilibrium by having the scale precisely balanced?
Adrian then brought a basket of autumn objects he had collected during our nature walks. So, how about weighing nature-objects with balance scales?

Comparing masses by balancing the weight of objects against the weight of UN-known masses.

Still, the right scale outweighs the left.

We need to add more to the left scale.

Done! Adrian finally found the precise balance.

For more on Autumn-themed activities, read here a roundup of all the activities we have done during the month of 🍂September and 🎃October: over 20 of them! arranged by the area of study in the post “🍂Fall & 🎃Halloween Inspired Homeschooling 101 Unit Study.”

Also, you can read more about our Montessori 🍁Fall 🎃 Inspired Activities for Children (2016)” here.

#### 1 Comment

• January 30, 2018 at 5:14 pm

Where did you find your scale and weights? Love you website!

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