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CK-12 Foundation
Linear Pairs: Angles and Lines in a Perspective Drawing
Gain some perspective on linear pairs. Aspiring mathematicians adjust the vanishing point on a perspective drawing. They see the effect on linear pairs of angles and answer five challenge questions based on their observations.
Annenberg Foundation
Balancing Sources
Pupils turn into investigative reporters throughout history to learn what it takes to balance different primary sources on the same topic. They use what they learn to create a narrative based on their own interpretation of a historic...