Kindergarten - Compare Lengths And Weights

Time and Measurement
Compare Lengths and Weights
Compare the length, weight and capacity of objects by making direct comparison with reference object.
Be able to give a rational estimate of the length of an object by comparing it to the length of other familiar objects. Compare weights of objects using the weight of an intermediate object. Figure out which object can hold more inside of itself by making direct comparisons without actually filling the object.

Sample Problems


Which is bigger a car or a house? How do you know?


Is an elephant or dog heavier? How do you know?


Which can hold more water, a cup or a tub? How do you know?

Learning Tips


Estimating length: Begin by measuring small everyday objects found around the house. Take a remote control, a book, and a crayon. Compare the three. Ask the student which is bigger. Take the longest object (most likely the book) and compare its length against a T.V. set. Which is bigger? Most likely the T.V.. Now without directly comparing the remote to the television ask the student which they think is longer. They can draw upon the previous comparison to the book.

Try this again with other objects. You can try the alternative where you take the smallest object and compare it to something even smaller. Then ask if the smallest object would be bigger or smaller than the other objects.


Estimating weight: Again take everyday household objects but make certain that at least two of the objects can be lifted by the student.

Ex: Have a student hold a pencil in one hand and a book in another. Ask the student which is heavier. Then go to the kitchen and ask the student to lift the refrigerator. Please don’t allow them to strain themselves. Now ask the student which was the heaviest and which was the lightest. Without actually trying to lift the stove, ask the student if the stove would be heavier or lighter than the book. How would they know? They can say that it is much bigger than the book and/or that it looks to be as heavy as the refrigerator.


Estimating volume: Take a tablespoon, a cup and an empty gallon. Put water onto the spoon. Then pout that same amount of liquid into the cup. Have the student visually inspect the cup to see how much of it was actually filled. Pour the water from the cup into the gallon. Again have the student visually inspect the container. They may think that the water has disappeared because the water has dispersed along the bottom. Now, ask the student which container they think would be able to hold more liquid. After they have correctly given you the answer, ask the student if the gallon or a tub would hold more liquid. Have the child explain why they think so.

Extra Help Problems


A worksheet focusing on length. Have compare small objects to one another. Use a penny as a reference.


Ex. Mouse= 6 pennies pencil=14 pennies glasses= 10 pennies

Have the student circle the smallest object and underline the longest object.


Book=25 pennies shoe= 17 pennies sock=15 pennies


Cup= 10 pennies plate= 14 pennies fork= 11 pennies


Ball= 13 pennies football= 19 pennies basketball= 18 pennies


Glasses= 9 pennies video= 12 pennies CD= 8 pennies


The next worksheet can focus on volume.

Ex: A small soda bottle= 2 cups a pot= 8 cups a gallon= 16 cups.

Ask the student to circle the object that holds the least amount of liquid and to underline the object that holds the most liquid.


Tub= 250 cups bowl= 3 cups mug= 2 cups


Pan= 8 cups vase= 12 cups saucepan= 6 cups


Quart= 4 cups pint= 2 cups gallon= 16 cups


Kettle= 8 cups pot= 20 cups sink= 50 cups


A worksheet will focus on weight. Compare smaller objects to a pillow.

Ex: a cat = 1 pillow a baby= 3 pillows a chair = 12 pillows

The student can be asked to circle the lightest object and to underline the heaviest object.


Backpack=10 pillows book= 1 pillow shoe= ½ pillow


Chair= 20 pillows computer= 30 pillows dog= 10 pillows


Mom= 40 pillows Dad= 50 pillows You= 35 pillows


Elephant= 500 pillows monkey= 25 pillows horse= 300 pillows


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