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Geometry Review: Two-Column Proofs
In this two-column proof activity, students create proofs to determine congruent shapes and the midpoint of a line. This two-page activity contains 11 multi-step problems.
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Calculating Conditional Probabilities and Evaluating Independence Using Two-Way Tables (part 1)
Being a statistician means never having to say you're certain! Learners develop two-way frequency tables and calculate conditional and independent probabilities. They understand probability as a method of making a prediction.
10th - 12th Math CCSS: Designed
Solution Sets to Equations with Two Variables
Can an equation have an infinite number of solutions? Allow your class to discover the relationship between the input and output variables in a two-variable equation. Class members explore the concept through tables and graphs and...
9th - 10th Math CCSS: Designed
Reasons for Geometric Statement/Reason Proofs
Stuck trying to remember the formal language of a geometric proof? Never fear, this handout has them all ready to go. The reasons are sectioned by topic so this handy guide is ready when you are to tackle those two column proofs.
8th - 11th Math CCSS: Adaptable
Using Linear Equations to Define Geometric Solids
Making the transition from two-dimensional shapes to three-dimensional solids can be difficult for many geometry students. This comprehensive Common Core lesson starts with writing and graphing linear equations to define a bounded region...
9th - 11th Math CCSS: Designed
I Always Feel Like Somebody's Watching Me
Future statisticians and potential psychics first conduct an experiment to collect data on whether a person can tell if someone is staring at them. Statistical methods, such as hypothesis testing, chi-square tests, binomial tests, and...
9th - 12th Math CCSS: Designed
Proofs into Practice: The Pythagorean Theorem in the Real World
As an introduction to the lesson plan, learners verify the Pythagorean theorem with a hands-on proof. Then, pupils use the theorem to determine whether three side lengths could form a right triangle and choose one of two real-life...
8th - 12th Math CCSS: Designed
Flippin' Proofs Parallel Lines Project
Learners will "flip" for this creative way to practice writing and explaining two-column proofs about parallel lines. As they create their masterpiece, young geometers are led to consider overall proof characteristics as well as...
10th - 12th Math CCSS: Adaptable