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Art History and Global Perspectives · Term 3

Realism and its Context

Students will examine the characteristics of Realism in art, understanding its emergence as a response to social and political changes.

Key Questions

  1. Analyze how Realist artists depicted everyday life and social issues.
  2. Compare the motivations of Realist artists with those of earlier Romantic artists.
  3. Explain the historical context that led to the rise of Realism in the 19th century.

Ontario Curriculum Expectations

VA:Cn11.1.8aVA:Re8.1.8a
Grade: Grade 8
Subject: The Arts
Unit: Art History and Global Perspectives
Period: Term 3

About This Topic

Simple Machines introduces the six fundamental mechanical devices: the lever, pulley, inclined plane, wedge, screw, and wheel and axle. Students learn how these machines make work easier by changing the magnitude or direction of a force. In the Ontario Grade 8 Structures and Mechanisms strand, this topic is the building block for understanding more complex systems.

Students also explore the scientific definition of work (force x distance) and how simple machines provide a trade-off between the two. This concept is essential for understanding mechanical advantage in both human-made tools and biological systems like the human skeleton. This topic comes alive when students can physically model the patterns of force and distance using real tools and weights.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionStudents often think that simple machines reduce the total amount of work done.

What to Teach Instead

Teachers must clarify that the work stays the same (or increases due to friction); only the effort force decreases. A hands-on activity comparing lifting a weight directly versus using a ramp helps students see they have to move the weight a longer distance.

Common MisconceptionMany believe that a machine is only something with a motor or moving parts.

What to Teach Instead

It is important to show that a simple ramp or a knife (wedge) is also a machine. A gallery walk of 'non-electric machines' can help broaden their definition of technology.

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Frequently Asked Questions

What are the six simple machines?
The six simple machines are the lever, the inclined plane, the wedge, the screw, the pulley, and the wheel and axle. Each one helps perform work by changing force or distance.
What is the scientific definition of work?
In science, work is done when a force is applied to an object and the object moves in the direction of that force. It is calculated as Work = Force x Distance.
How can active learning help students understand simple machines?
Active learning through hands-on labs allows students to feel the difference in effort when using a machine. When they physically move a fulcrum or pull a pulley, the trade-off between force and distance becomes a lived experience. This student-centered approach turns abstract physics formulas into practical knowledge they can apply to everyday tools.
How do simple machines relate to the human body?
The human body uses bones as levers and joints as fulcrums. For example, your forearm acts as a third-class lever when you lift an object, with your elbow as the pivot point.

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