Begin the lesson by introducing the concept of simple machines. Discuss how these devices, with often just one moving part, make work easier by multiplying force, increasing speed, or changing the direction of force.

Introduce the six types of simple machines: lever, pulley, wheel and axle, inclined plane, screw, and wedge. Explain how each type functions and its role in making work easier.

Use the video 'Simple Machines – Levers' to illustrate how levers reduce effort by altering the position of the fulcrum or applying effort at different points. This video helps visualize the mechanical advantage of levers.

Engage students with the video 'Simple Machines – Pulleys' to explore the concept of pulleys and their practical applications. This resource demonstrates how pulleys alter the direction of effort and reduce the force needed to lift loads.

Facilitate a discussion on how simple machines are used in everyday tasks and their impact on efficiency.

Conduct a hands-on activity where students create a simple lever using classroom materials. This practical exercise helps demonstrate how levers function and make work easier.

Use the assessment 'Investigating Levers' to guide students in exploring how the position of the fulcrum affects the effort needed to lift a load. This activity reinforces understanding through experimentation.

Assign students to identify and describe examples of simple machines in their home or community. This task encourages them to apply their knowledge to real-world scenarios.

Use the assessment 'Simple Machines' to evaluate students' comprehension of the six types of simple machines and their functions. This worksheet includes activities like labeling diagrams and identifying examples.

Facilitate a class discussion to review the key concepts learned about simple machines. Encourage students to reflect on how these machines impact their daily lives.

Administer the 'Review – Work and Simple Machines' assessment to test students' understanding of the concepts covered in the unit. This comprehensive review includes defining work, calculating it, and explaining scenarios involving simple machines.