Objective

By the end of this lesson, you will be able to understand the basic principles of physics related to engineering and apply them in simple activities.

Materials and Prep

• Pencil and paper
• Ruler
• Various objects (e.g., books, toys, building blocks)

Prior knowledge: Basic understanding of measurements and units.

Activities

1. Activity 1: Exploring Forces

Take different objects and observe how they behave when pushed or pulled. Record your observations in a table, noting the direction and intensity of the forces applied.

2. Activity 2: Building Structures

Using building blocks or other materials, construct a simple structure that can support a small weight. Test the structure by placing the weight on top and observe its stability.

3. Activity 3: Balloon Rocket

Create a balloon rocket by attaching a string to a balloon and securing the other end of the string. Blow up the balloon and release it, observing how the escaping air propels the balloon forward.

Fourth Grade Talking Points

• Forces: "Forces are pushes or pulls that can make objects move or stop. They can also change the direction or shape of an object."
• Gravity: "Gravity is a force that pulls objects towards the center of the Earth. It's what keeps us on the ground and makes things fall."
• Stability: "Stability refers to how well an object can stay in place or maintain its shape. Strong and balanced structures are more stable."
• Air Resistance: "Air resistance is a force that opposes the motion of objects through the air. It can slow down or change the direction of moving objects."
• Engineering: "Engineering is the field of designing and building things. Engineers use scientific principles, like those in physics, to create structures, machines, and more."