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Alabama Learning Exchange
Alex: Why Do We Need Measurement Tools?
This activity will explore the need for standard measurement tools. It will engage the students and promote critical thinking and reasoning. This is a lead in activity to conversions. This lesson plan was created by exemplary Alabama...
National Council of Teachers of Mathematics
Nctm: Figure This: Pigeonhole Principle
What is the possibility that another student in your school will have your exact same initials? Try this math challenge using logical reasoning and the "Pigeonhole principle," to discover how this could actually happen. An engaging...
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Find a System
The purpose of this task is to encourage students to think critically about both the algebraic and graphical interpretation of systems of linear equations. Aligns with A-REI.C.6.