Virginia SOL K.MG.1.a.iii
The Standard
weights of two objects using the terms heavier or lighter
Virginia Standards of Learning for Mathematics · The student will reason mathematically by making direct comparisons between two objects or events using the attributes of length, height, weight, volume, and time.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students compare two objects by holding one in each hand or placing them on a balance scale. They name which object is heavier and which is lighter, then explain what evidence supports the comparison.
What Mastery Looks Like
- Given two objects with noticeably different weights, a student tests them instead of guessing from size. The student uses heavier and lighter correctly and explains the result using the balance pans.
Common Misconceptions
- Students often assume the larger or taller object must weigh more. They may judge by sight instead of handling the objects. Some read a balance backward and call the object on the higher pan heavier.
How to Assess It
- Give each child a rock and a cotton ball. Ask, “Which is heavier, which is lighter, and how do you know?”
Lesson moves
Ways to Teach It
Pairs place classroom objects on a balance scale, name the heavier and lighter object, and explain what the pans show.
Show a large sponge and small wooden block, then ask, “Which will be heavier, and what test could prove your answer?”
Play Weight Match-Up by having students draw two object cards, compare the objects, and earn a point for a correct explanation.
Students compare two packed lunch bags and discuss how weight affects which bag is easier to carry.
Free download
Printable K.MG.1.a.iii Worksheet
A ready-to-print activity worksheet aligned to K.MG.1.a.iii, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetKeep exploring
Related Standards
- 2.MG.1.b.ii
the weight of an object to the nearest pound, using a scale; and
- K.MG.1.a.i
lengths of two objects using the terms longer or shorter;
- K.MG.1.a.ii
heights of two objects using the terms taller or shorter;
- 1.MG.1.a.ii
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; and
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.