Lesson plan

Heavier or Lighter?

Fill ‘em up! This lesson teaches students to compare how much different containers can hold. Get ready for some overflowing fun!
Need extra help for EL students? Try the Can you compare? pre-lesson.
EL Adjustments
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Need extra help for EL students? Try the Can you compare? pre-lesson.

Students will compare the weights of objects.

The adjustment to the whole group lesson is a modification to differentiate for children who are English learners.
EL adjustments
(5 minutes)
  • Take out the scale and ask students what they think it is.
  • Explain that scales are used to measure weights. Ask students if they’ve ever been weighed at the doctor’s office before. Have them compare the scales that they are weighed on with the one you have in the classroom.
(10 minutes)
  • Demonstrate how to measure two objects using the balance scale. Tell students that the scale doesn’t tell you the exact weight of the objects, but instead tells you which one is heavier.
  • Put two objects on the scale and show students that the heavier object drops towards the ground while the lighter object lifts up.
(10 minutes)
  • Hold up two more objects. Have students guess which object they think will be heavier. Ask students to raise their hands to share their answers.
  • Repeat this process with two more objects.
(10 minutes)
  • Hand out the Comparing Weight and Color & Compare Weights of Objects worksheets. Have students complete them as you circulate around the room, providing help as needed.


  • Have students work with a partner to complete the worksheets.


  • When students finish their worksheets, have them come up and take turns using the balance scale to measure objects.
(5 minutes)

Assess students’ understanding by having them share out their answers to the worksheets.

(5 minutes)

Ask students to turn and talk to a partner to share one thing they learned about measuring weight.

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