What measurement concepts should preschoolers learn?

Preschoolers should explore measurement through direct comparison and non-standard units. They can compare the length of two objects by placing them side by side, determine which container holds more water, and describe objects as heavy or light. At this age, measurement is about building vocabulary (long, short, tall, heavy, light, full, empty) and developing an awareness that attributes like length and weight can be quantified. Children do not need standard units like inches or centimeters yet. Instead, they measure using blocks, hand spans, or footsteps. Worksheets that show two objects and ask which is longer, taller, or heavier build the visual comparison skills that prepare students for formal measurement in kindergarten and first grade.

How do you teach measurement to a 4-year-old?

Make measurement part of daily life. Ask your child to find something longer than their shoe, stack blocks and count how tall the tower is, or compare how heavy two stuffed animals feel. Use non-standard units first: "This table is 8 hand-spans long." This teaches the process of measuring (choosing a unit, placing it end to end, counting) without the complexity of reading a ruler. Filling and pouring with containers teaches volume. Worksheets that show objects next to a row of counting units help children practice measuring on paper. The key principle is that every measurement is a comparison to a chosen unit. Keep activities playful and exploratory, letting the child discover rather than drilling procedures.

Why is non-standard measurement taught before standard measurement?

Non-standard measurement (using blocks, paper clips, or hand spans) teaches children the concept of measurement without the added complexity of reading scales and rulers. Children first need to understand that measurement means comparing an attribute to a unit and counting how many units fit. Once this concept is solid, transitioning to standard units like inches and centimeters makes sense. Research shows that children who skip non-standard measurement and jump directly to rulers often struggle with understanding what the numbers on a ruler mean. kindergarten worksheets that use non-standard units build the foundational understanding that a measurement is a count of equal-sized units placed end to end.

Kindergarten · Math · K.MD.A.2, K.MD.A.1

Measurement Lesson Plan for Kindergarten

A ready-to-teach measurement lesson for Kindergarten. Everything below is classroom-tested structure: an objective, a 45-minute sequence, a way to check who got it, and 8 printable practice pages.

Approximately 45 minutes

Learning objective

Practice ruler measurements with step-by-step guided exercises
Build measurement skills aligned to Kindergarten math standards
Apply number sense and problem-solving to ruler measurements activities

Materials

Longer and Shorter - T-Rex
Measuring Height in Non-standard Units - Beach Ball
Measuring Length in Non-standard Units - Car
Measuring objects against a scale (height) - Crayon
Measure and Mark Length
Measure Lengths
Pencils, and whiteboard space for the modeled examples

Lesson steps

1. Warm up together (5 min)
Open with a quick count-around or number talk that touches measurement. Ask students where they have seen measurement outside of math class. You are listening for who already has the vocabulary and who does not, so keep it light and let several students answer.
2. Model it (I do) (10 min)
Work two examples of measurement on the board, thinking out loud the whole way. Say the quiet parts: what you notice first, which step you do next, and why. Deliberately make one small error on the second example and let the class catch it.
3. Practice together (we do) (10 min)
Work three more problems as a class. Ask a different student to supply each step rather than the whole answer. If a step stalls, drop back to concrete objects or a drawing before moving on.
4. Independent practice (you do) (15 min)
Hand out "Longer and Shorter - T-Rex". Students work independently while you circulate. Note who is fluent, who is counting on fingers, and who has not started, because that grouping drives tomorrow's small group.
5. Close the loop (5 min)
Pull the class back. Ask one student to explain a problem they got right and one to name something that is still confusing. End on the confusion, not the success, so students learn that naming a gap is normal.

Check for understanding

Collect the practice pages and sort them into three piles: fluent, developing, and not yet. Any student in the third pile needs measurement retaught in a small group before the class moves on.

Differentiation

Extra support. Students who stall: pull them into a small group and rebuild measurement with concrete materials or a simpler text before asking for the written work again. Do not send the page home as homework, it will just rehearse the misunderstanding.

Extension. Students who finish early: ask them to write their own measurement problem for a partner to solve, then check the partner's work. Creating a problem is harder than solving one and it surfaces whether they really understand measurement.

Skills covered in this lesson

Ruler measurements · Measurement · Measuring length · Measuring height · Mark Length · Measure Length · Height Length · Length Ruler · Non Standard Units · Big Small · Biggest Smallest · Tall Short

Practice pages for this lesson

6 items, 8 printable pages that match the independent-practice step.

Questions teachers ask about teaching measurement

What measurement concepts should preschoolers learn?: Preschoolers should explore measurement through direct comparison and non-standard units. They can compare the length of two objects by placing them side by side, determine which container holds more water, and describe objects as heavy or light. At this age, measurement is about building vocabulary (long, short, tall, heavy, light, full, empty) and developing an awareness that attributes like length and weight can be quantified. Children do not need standard units like inches or centimeters yet. Instead, they measure using blocks, hand spans, or footsteps. Worksheets that show two objects and ask which is longer, taller, or heavier build the visual comparison skills that prepare students for formal measurement in kindergarten and first grade.
How do you teach measurement to a 4-year-old?: Make measurement part of daily life. Ask your child to find something longer than their shoe, stack blocks and count how tall the tower is, or compare how heavy two stuffed animals feel. Use non-standard units first: "This table is 8 hand-spans long." This teaches the process of measuring (choosing a unit, placing it end to end, counting) without the complexity of reading a ruler. Filling and pouring with containers teaches volume. Worksheets that show objects next to a row of counting units help children practice measuring on paper. The key principle is that every measurement is a comparison to a chosen unit. Keep activities playful and exploratory, letting the child discover rather than drilling procedures.
Why is non-standard measurement taught before standard measurement?: Non-standard measurement (using blocks, paper clips, or hand spans) teaches children the concept of measurement without the added complexity of reading scales and rulers. Children first need to understand that measurement means comparing an attribute to a unit and counting how many units fit. Once this concept is solid, transitioning to standard units like inches and centimeters makes sense. Research shows that children who skip non-standard measurement and jump directly to rulers often struggle with understanding what the numbers on a ruler mean. kindergarten worksheets that use non-standard units build the foundational understanding that a measurement is a count of equal-sized units placed end to end.

More math lesson plans for Kindergarten

Looking for printables rather than a plan? Browse all measurement worksheets for Kindergarten.