Virginia SOL 5.MG.1.b.iii
The Standard
liquid volume (milliliters and liters).
Virginia Standards of Learning for Mathematics · The student will reason mathematically to solve problems, including those in context, that involve length, mass, and liquid volume using metric units.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students decide whether milliliters or liters fit a situation. They estimate an amount, measure liquid with a marked tool, and use the result to answer a contextual question.
What Mastery Looks Like
- A student selects liters for larger containers and milliliters for smaller amounts. They give a sensible estimate, read a marked container correctly, and use the measurement to solve the problem.
Common Misconceptions
- Students may choose liters for a medicine cup or milliliters for a bathtub, or leave units off answers. They may misread scale intervals or think 1 liter equals 100 milliliters instead of 1,000 milliliters.
How to Assess It
- Give each student a cup labeled "cafeteria juice" and a 500-milliliter graduated cylinder. Have them estimate the volume, measure it, and record both values with units.
Lesson moves
Ways to Teach It
Set out graduated cylinders, measuring cups, and containers; students estimate, then measure, colored water and record the difference between both results.
Ask, "Would you measure a spoonful of medicine in milliliters or liters?" Students defend their choice with a reasonable estimate.
Play Volume Match: teams pair container cards with plausible volume cards, then earn a point by explaining each unit choice.
Plan drinks for a class picnic using 2-liter bottles and 250-milliliter cups, then determine how many bottles the class needs.
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