Science · Grade 2

Active learning ideas

Gravity: The Pulling Force

Active learning works for this topic because students need to experience gravity firsthand to move beyond abstract ideas. Dropping objects, simulating floating, and comparing results lets them test their own assumptions in real time. This hands-on approach builds lasting understanding better than passive explanations alone.

• Ontario Curriculum Expectations
• 2-PS1-1

• 25–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Plan-Do-Review
• 35 min · Small Groups

Drop Test Challenge: Same Height Drops

Provide objects of varying mass and shape, such as balls, books, and feathers. Have students drop pairs from desk height, time the falls with stopwatches, and record which hits first. Discuss air effects in a class share-out.

Analyze why objects fall to the ground when dropped.

Facilitation Tip

During Drop Test Challenge, position students in small groups to drop three objects at once and call out timing results to build shared data quickly.

What to look for

Give students a drawing of a ball falling from a hand. Ask them to draw an arrow showing the direction of the pull of gravity and write one sentence explaining what is causing the pull.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 02

• Plan-Do-Review
• 25 min · Pairs

No Gravity Simulation: Balloon Float

Inflate balloons and release them; observe descent due to gravity. Predict and test what happens if students hold balloons while jumping. Groups draw 'gravity-free' scenes and compare to real drops.

Compare how different objects fall when dropped from the same height.

Facilitation Tip

For No Gravity Simulation, inflate balloons fully so students can feel the pull of gravity even as they simulate floating.

What to look for

Hold up two different objects (e.g., a crumpled piece of paper and a book). Ask students to predict which will hit the ground first when dropped from the same height. Then, drop them and ask students to describe what they observed about the falling patterns.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 03

• Plan-Do-Review
• 40 min · Small Groups

Ramp Roll-Off: Gravity Pull

Set up inclines with toy cars. Students predict and test speeds down ramps of different angles, measuring distance traveled. Adjust heights and record patterns on charts.

Predict what would happen if there was no gravity.

Facilitation Tip

In Ramp Roll-Off, place a soft mat below the ramp to prevent objects from rolling too far and to keep cleanup manageable.

What to look for

Pose the question: 'Imagine you are on the moon, where gravity is weaker than on Earth. What would be different about jumping?' Guide students to discuss how gravity affects their ability to jump and move.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 04

• Plan-Do-Review
• 30 min · Whole Class

Class Prediction Wall: Gravity Worlds

Pose 'What if no gravity?' and have students illustrate predictions on sticky notes. Drop objects to test ideas, then revise drawings based on evidence.

Analyze why objects fall to the ground when dropped.

What to look for

Give students a drawing of a ball falling from a hand. Ask them to draw an arrow showing the direction of the pull of gravity and write one sentence explaining what is causing the pull.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

A few notes on teaching this unit

Approach this topic by letting students lead with their predictions before testing them, then guiding them to reconcile observations with prior beliefs. Avoid explaining gravity as a force of weight; instead, focus on the pull toward Earth's center and use consistent language across activities. Research shows that firsthand comparisons of falling objects reduce misconceptions more effectively than demonstrations alone.

Students will confidently describe gravity as a pulling force toward Earth's center and explain its effects through observation and data. They will compare fall patterns, make predictions about gravity-free scenarios, and correct common misconceptions through evidence from their activities. Discussion and written responses will show clear evidence of this understanding.

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Watch Out for These Misconceptions

• During Drop Test Challenge, watch for students who believe heavier objects fall faster.

  Have students time three objects of different weights dropped from the same height, then record results on a shared class graph to show that most fall at similar speeds, with air resistance affecting only light items like feathers.

• During Ramp Roll-Off, watch for students who think objects roll because they are heavy.

  Students should roll both heavy and light objects down the ramp, then discuss how gravity pulls all objects equally toward Earth, regardless of weight.

• During No Gravity Simulation, watch for students who think objects would stop moving without gravity.

  Ask students to simulate floating with balloons while discussing how objects in space continue moving unless another force acts on them, connecting this to their balloon activity.

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Methods used in this brief

• Plan-Do-Review