To teach measurement of length and area, you can follow these steps:

1. Introduce the concept: Start by explaining what measurement is and why it is important in our daily lives. Provide examples of situations where measurement of length and area is necessary.

2. Define the units: Introduce standard units of length such as meters, centimeters, inches, or feet. Explain how these units are used for measuring different objects. Similarly, for area, introduce square units like square meters or square feet.

3. Use real-life examples: Use objects or visuals to help students understand the concept practically. For length, have students measure different objects using rulers or measuring tapes. For area, provide them with objects like square tiles or grids, and have them count the number of tiles needed to cover an area.

4. Practice conversions: Teach students how to convert between different units of length and area. For example, show them how to convert centimeters to meters or square feet to square meters. Provide practice problems for them to apply their skills.

5. Explore formulas: For more complex shapes, introduce formulas to calculate area, such as the formula for the area of a rectangle or triangle. Demonstrate how to use these formulas and provide practice problems for reinforcement.

6. Engage in hands-on activities: Plan hands-on activities or games to make the learning experience more interactive. For example, have students measure the length and area of various objects around the classroom or school.