Practice 6-3 Proving That a Quadrilateral is a Parallelogram
In this quadrilateral learning exercise, students prove that a quadrilateral is a parallelogram. They use algebra to determine the value of specified angles. This one-page learning exercise contains 20 problems.
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Investigating Properties of Parallelograms
Given different parallelograms, geometers make conjectures about their properties. They then work in small groups to prove (or disprove) their conjectures. The activity provides many opportunities for making conjectures and critiquing...
7th - 10th Math CCSS: Designed
New Review Properties of Quadrilaterals
What type of quadrilateral is that? Discover the difference between the types of quadrilaterals. Small groups investigate types of quadrilaterals using geometry software to find their properties. To keep track of the different...
9th - 11th Math CCSS: Adaptable
Estimating Centers and Interpreting the Mean as a Balance Point
How do you balance a set of data? Using a ruler and some coins, learners determine whether the balance point is always in the middle. Through class and small group discussions, they find that the mean is the the best estimate of the...
9th - 10th Math CCSS: Designed
Module 5: Modeling with Geometry
Solids come in many shapes and sizes. Using geometry, scholars create two-dimensional cross-sections of various three-dimensional objects. They develop the lesson further by finding the volume of solids. The module then shifts to finding...
9th - 12th Math CCSS: Designed