Online lesson from www.illustrativemathematics.org
Supports the following Standards of Mathematical Practice
• 2 Reason abstractly and quantitatively.
• 3 Construct viable arguments and critique the reasoning of others.
• 5 Use appropriate tools strategically.
• 6 Attend to precision.
• 7 Look for and make use of structure.
• 8 Look for and express regularity in repeated reasoning.
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