Which metric unit is appropriate?

Learning Objectives Identify the standard metric units for length (millimeter, centimeter, meter, kilometer). Identify the standard metric units for mass (gram, kilogram). Identify the standard metric units for capacity (milliliter, liter). Compare the relative sizes of metric units within the same measurement system. Select the most appropriate metric unit to measure the length, mass, or capacity of a given object. Justify their choice of a metric unit for a given measurement scenario. Have you ever tried to measure a giant whale with a tiny ruler? 🐋 It would take forever! How do we pick the right measurement tool for the job? In this lesson, we'll become measurement detectives! We will learn about different metric units for length, mass (weight), and capacity (how m...

TermDefinitionExample LengthHow long, wide, or tall something is, or the distance between two points.The length of your pencil might be 15 centimeters. MassHow much 'stuff' or matter is in an object. We often think of this as how heavy something is.A paperclip has a mass of about 1 gram. CapacityThe amount a container can hold, usually a liquid. It is also called volume.A standard carton of milk has a capacity of 1 liter. Meter (m)The base unit for measuring length. It's about the length of a guitar or a long step.The height of a classroom door is about 2 meters. Gram (g)The base unit for measuring mass. It's very light.A single raisin has a mass of about 1 gram. Liter (L)The base unit for measuring capacity.A large water bottle often holds 1 liter of water. Metric Pre...

Length Relationships 1 km = 1000 m, 1 m = 100 cm, 1 cm = 10 mm Use these to understand size. Kilometers are for very long distances (cities). Meters are for medium lengths (rooms). Centimeters are for small objects (books). Millimeters are for tiny things (insects). Mass Relationships 1 kg = 1000 g Use this to understand mass. Kilograms are for heavier objects (people, bags of apples). Grams are for very light objects (a feather, a coin). Capacity Relationships 1 L = 1000 mL Use this to understand capacity. Liters are for larger amounts of liquid (a carton of juice). Milliliters are for very small amounts (a spoonful of medicine).