Objective

By the end of this lesson, you will be able to apply principles of physics to build and understand the mechanics of Lego structures.

Materials and Prep

• Lego bricks of various sizes and shapes
• Pen and paper for taking notes
• Computer or mobile device with internet access (optional for further research)

Prior knowledge of basic Lego building techniques and familiarity with physics concepts such as force and motion will be helpful.

Activities

1. Explore the concept of center of gravity:

   • Build a simple tower using Lego bricks.
   • Gradually add bricks to the top until the tower becomes unstable and falls.
   • Discuss why the tower falls and how the center of gravity affects its stability.

2. Experiment with friction:

   • Build a Lego car and test its ability to move on different surfaces (e.g., carpet, tile, cardboard).
   • Observe how the car's performance varies based on the type of surface and discuss the role of friction in motion.

3. Investigate the principles of leverage:

   • Construct a seesaw using Lego bricks and a wooden plank.
   • Experiment with different placements of weight on the seesaw and observe how it affects the balance.
   • Explain the concept of leverage and how it allows objects of different weights to balance.

Eighth Grade Talking Points

• "In physics, center of gravity refers to the point where the entire weight of an object can be considered to be concentrated. It affects an object's stability."
• "Friction is the force that opposes motion when two surfaces are in contact. It plays a crucial role in determining how objects move."
• "Leverage is a principle in physics that involves using a lever or a pivot point to gain an advantage in moving or lifting objects."
• "Understanding these concepts can help us build stronger and more stable Lego structures, as well as apply them to real-world engineering and design."