What Makes Things Move? (Pushes and Pulls)

Learning Objectives

At the end of this lesson, you are expected to:

• Define force as a push or a pull.

• Identify pushes and pulls in everyday activities.

• Describe at least three ways a force can change an object.

Warm-Up Activity

Take a moment to think about:

• What do you do to make a stationary bicycle start moving?

• What do you do to stop a rolling ball?

• What happens when you press your hands together very hard?

Lesson Proper

Imagine you are at the palengke (market) with your nanay. Her cart is full of heavy groceries. To get it moving, she has to… push it! Later, you see a man pulling his kariton full of recyclables. At home, you want to get a toy from under the bed, so you reach and… pull it out.

All these actions—pushing and pulling—are very powerful. They are the secret behind why anything in our world starts to move, stops, or changes. This secret power has a special name in science.

Main Explanation

What is a Force? In science, a force is simply a push or a pull. You cannot see a force itself, but you can always see what a force does to an object.

How Does Force Change Things? A force can change an object in five main ways:

1. Make it start moving. A force can get a still object to move. Example: You push a friend on a swing to start it.

2. Make it stop moving. A force can slow down or stop a moving object. Example: You catch a ball to stop it.

3. Change its speed. A force can make a moving object go faster or slower. Example: You pedal harder to make your bike go faster.

4. Change its direction. A force can make a moving object turn or go a different way. Example: A soccer player kicks a ball to change where it is going.

5. Change its shape. A force can stretch, squeeze, or bend an object. Example: You press on clay to flatten it.

Real-World Examples

Example at Home:

• Pulling a drawer open to get a spoon.

• Pushing a door closed.

• Squeezing a toothpaste tube (a push that changes its shape).

Example in School:

• Pushing a pencil across your paper to write.

• Pulling your chair out to sit down.

• Kicking (a strong push!) a ball during PE class.

Example in the Community:

• A vendor pushing his food cart.

• A construction worker pulling a rope to lift materials.

• A tricycle driver pressing the brakes (a force to stop).

Understanding the Lesson Better

Key Ideas in Simple Words

• Force is just a science word for a push or a pull.

• We use forces all the time, every day.

• You know a force is acting when you see something start, stop, speed up, slow down, turn, or get bent.

• Forces make things happen in our world.

Step-by-Step Examples

Example 1: Making a Toy Car Start Moving

• The toy car is sitting still on the floor.

• You use your hand to give it a push.

• The force from your push makes the car start moving.

Example 2: Stopping a Rolling Can

• A can is rolling across the floor.

• You use your foot to gently push against it in the opposite direction.

• The force from your foot makes the can stop moving.

Example 3: Changing the Shape of Dough

• You have a ball of pandesal dough.

• You use your hands to push and pull on it.

• The forces from your hands change its shape from a ball into a small loaf.

Common Mistakes & Clarifications

Common Mistake 1: Many students think that an object needs to move for a force to be acting.

• Correct Thinking: A force can be acting even if nothing moves! If you push on a very heavy cabinet and it doesn't budge, you are still applying a force. The force is there, it's just not strong enough to move that heavy object.

Common Mistake 2: Some students mix up what is being pushed or pulled.

• Correct Thinking: Always ask: "What object is receiving the force?" When you kick a ball, your foot applies the force to the ball. The ball is the object that changes.

Helpful Tips

• The Push-Pull Dance: Remember the two actions: PUSH (away from you) and PULL (toward you).

• Look for the Change: Can't tell if a force is used? Look for a change! If something changed how it was moving or what it looked like, a force was probably involved.

For Curious Minds

Did you know? A famous scientist named Sir Isaac Newton wrote very important laws about forces and motion over 300 years ago. His ideas help engineers build everything from bridges to rockets! It all starts with the simple push and pull you learned today.

Real-World Connection

How can this lesson help you in real life?

• At Home: Now you understand that when you help by pushing the mop or pulling the weeds, you are using scientific forces!

• In Games: When you play tumbang preso or patintero, you are using forces to hit the can, run, stop, and change direction.

• Staying Safe: Understanding that a force can make things stop helps you know why seatbelts in cars and helmets when biking are so important. They help control the force during a sudden stop.

What You Have Learned

Let's check what you now know:

• A force is a ______ or a ______. (push / pull)

• I can see a force is acting when an object starts moving, ______ moving, changes speed, changes ______, or changes shape. (stops / direction)

• When I open a refrigerator door, I am using a ______ force. (pulling)

What You Can Do

What You Can Do with This Lesson in Real Life:

• You can now explain why things move. The next time you see something start or stop, you can say, "A force is acting on it!"

• You can be a force detective. Look around your house and identify 5 pushes and 5 pulls you see in 10 minutes.

• This will help you when you need to explain how to do something. "To move the table, we need to apply a strong pushing force together!"