Pennsylvania Department of Education
Associative Properties
Young scholars investigate the associative property of addition. In this associative property of addition lesson, students work in pairs and build addition problems with six blocks. They sit on either side of a desk so that they can...
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A Lesson in Chaos for Middle School Students
Pupils create a chaotic system. They display a basic knowledge of the system and are able to recognize it. The students form a hypothesis about a chaotic system and theorize the cause and effect.
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The Sum of the Parts
Second graders observe some everyday common objects in order to attempt to learn about simple systems and how they fit together. They observe small details in order to identify the parts of a whole design.
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Hexagoning the Circle
Students explore similarity to see that the area of a circle should be a constant times the square of its radius. Students create a hexagon. Students share their designs with the class.
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Positive and Negative Numbers
Students discover negative numbers and how to use them by using the number line and the "team" method.
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Calculating the shortest distance between two points
Eighth graders find the length of the third side of a right triangle.