Virginia SOL 1.MG.1.a.ii
The Standard
weights of two objects (using a balance scale or a pan scale) and compare the measurements using the terms lighter, heavier, or the same as
Virginia Standards of Learning for Mathematics · The student will reason mathematically using nonstandard units to measure and compare objects by length, weight, and volume.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use a balance or pan scale and repeated nonstandard units, such as connecting cubes, to measure two objects. They compare the results using lighter, heavier, or the same as.
What Mastery Looks Like
- Students balance each object with the same type of unit and count the units accurately. They use lighter, heavier, or the same as to compare the two measurements.
Common Misconceptions
- Students may assume the larger object is always heavier. They may use different units for each object, or think the higher pan holds the heavier object.
How to Assess It
- Give each student a balance scale, an eraser, a pencil, and connecting cubes. Ask them to measure both objects and complete: “The ___ is heavier than the ___.”
Lesson moves
Ways to Teach It
Students use a pan balance and plastic counters to measure and compare a marker, glue stick, scissors, and small book.
Ask students to explain why a small rock might be heavier than a large sponge, then test their ideas.
Play Weight Match by having pairs find two classroom objects that balance with the same number of connecting cubes.
Compare two lunchbox items with a balance and decide which item adds more weight to the lunchbox.
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Printable 1.MG.1.a.ii Worksheet
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Related Standards
- K.MG.1.a.iii
weights of two objects using the terms heavier or lighter;
- 2.MG.1.b.ii
the weight of an object to the nearest pound, using a scale; and
- 1.MG.1.a.i
lengths of two objects (units laid end to end with no gaps or overlaps) and compare the measurements using the terms longer/shorter, taller/shorter, or the same...
- 1.MG.1.b
Measure the length, weight, or volume of the same object or container with two different units and describe how and why the measurements differ.
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