Lesson Plan
Curated OER

Angles - Unlocking Geometry

For Teachers 3rd - 5th
Students investigate the concept of angles and how they are used in geometry. They construct polygons using various types of angles and then classify them according to their physical properties. Students use a computer program in order...
Lesson Plan
Curated OER

Garden Variety Geometry

For Teachers 9th - Higher Ed
A home improvement plan can help adult learners preparation for the GED exam. They review vocabulary, prepare diagrams, complete a worksheet, calculate perimeters and analyze how to approach a story problem. They identify many geometry...
Lesson Plan
Curated OER

Chess Math

For Teachers 4th - 5th
Students review angles. In this geometry lesson plan, students become chess players on a floor chess board. When they make a move, they need to identify the angle of their movement. In the lesson plan it says the "degree" of the angle,...
Lesson Plan
Curated OER

Geometry: Translations and Reflections

For Teachers 7th - 9th Standards
Group work and participation is used to perform a specified translation or reflection. In this geometrical translation lesson plan, small groups of pupils are each given a shape to plot on a coordinate grid. Each shape is then translated...
Lesson Plan
Curated OER

Geometry: Area, Scale Factor, Circumference

For Teachers 5th - 8th
In this geometry worksheet, students solve 10 problems regarding area, scale factors, and circumference. Students, in 3 of the problems, are given the circumference and asked to work backwards to find missing information.
Lesson Plan
Curated OER

Origami Ducks: Geometry, Listening, and Following Directions

For Teachers 2nd - 4th
Make origami ducks with your class to reinforce geometry concepts and vocabulary; develop fine motor and visual translation skills; and enrich study of Japanese culture, the pond habitat, or migration. Create a whole group "worksheet"...
Instructional Video4:02
Khan Academy

Area of a Circle, Perimeter, Area, and Volume, Geometry

For Students 7th - 10th
This production, the second installment in a series of circles, demonstrates the process of finding the area of a circle. It is effective as an introductory tool. However, it needs to explain the reasoning behind the formula because that...
Instructional Video3:48
Khan Academy

Parallel Lines From Equation, Mathematics I, High School Math

For Students 7th - 9th
Here is a fairly basic video that uses three equations, each written in slope-intercept form, to determine whether the lines are parallel. Sal graphs each equation on the same coordinate plane to show how their slopes compare. The video...
Lesson Plan
Curated OER

Algebraic Processes And Its Connections To Geometry

For Teachers 2nd - 3rd
Youngsters explore number patterns within a Hundreds Chart. They discover six specific patterns from six teacher-directed rules in cooperative groups and describe in words ONE of the three patterns in their Learning Logs. They prove for...
Lesson Plan
Curated OER

Geometry Practice: Classifying Solids #2

For Teachers 7th - 9th
For this solids worksheet, students identify the characteristics of solids. They name solids and determine the number of faces. This three-page worksheet contains seventeen problems. Answers are listed on the last page.
Instructional Video4:43
Khan Academy

Heron's Formula, Perimeter, Area, and Volume, Geometry

For Students 9th - 10th
Introducing the Heronês formula is the main objective of this lecture. Essentially, it describes how to solve a problem. Heron's formula is given, and then a problem is solved. Since the actual explanation of the formula will be given...
Instructional Video3:56
Khan Academy

Find the Volume of a Triangular Prism and Cube, Geometry

For Students 9th - 10th
By describing the formula used to calculate the volume of a triangular prism, Sal gives students practice in solving volume equations. The questions are straightforward and solved in an easy-to-follow manner. Show this to your class as...
Instructional Video15:15
Khan Academy

Triangle Medians and Centroids (2D Proof), Geometry

For Students 9th - 10th
In the first part of this series, the instructor addressed the terminology used with medians and centroids of triangles and then showed how to solve this type of problem. He illustrated the concepts using a high-level problem, likely...
Instructional Video4:38
Khan Academy

Rhombus Diagonals, Quadrilaterals, Geometry

For Students 9th - 10th
Delving into proof that the diagonals of a rhombus are perpendicular to each other, this lecture evaluates the angles and sides of this figure. It would serve as a great test preparation activity.
Lesson Plan
Curated OER

Glasses

For Teachers 7th - 9th Standards
Provide your class some practice with the dimensions of geometric figures. Here you have a set of three different-shaped, stemmed drinking glasses with diameters and heights provided. Math-minded individuals calculate the volume of each....
Lesson Plan
2
2
Curated OER

Two Triangles' Area

For Teachers 7th - 9th Standards
Need an activity for teaching the Pythagorean Theorem? Geometry juniors apply the Pythagorean theorem to two triangles to determine a final calculation. 
Lesson Plan
Curated OER

Conics in Geometry

For Teachers 9th - 12th Standards
High schoolers analyze characteristics and properties of two and three-dimensional shapes in this geometry lesson. They follow detailed directions to use the Cabri Geometry II Application on their TI-89 calculator to construct a...
Lesson Plan
EngageNY

Mid-Module Assessment Task - Geometry (Module 1)

For Teachers 9th - 10th Standards
How do you prepare class members for the analytical thinking they will need in the real world? An assessment requires the higher order thinking they need to be successful. The module focuses on the concept of rigid transformations...
Lesson Plan
EngageNY

Distance and Complex Numbers 1

For Teachers 11th - 12th Standards
To work through the complexity of coordinate geometry pupils make the connection between the coordinate plane and the complex plane as they plot complex numbers in the 11th part of a series of 32. Making the connection between the two...
Lesson Plan
Curated OER

Geometry/Math A Regents Questions: Angle Bisectors

For Teachers 9th - 12th
In this angle bisector worksheet, students solve five short answer and multiple choice problems. Students construct angle bisectors using a compass.
Instructional Video5:16
Krista King Math

Area of a Triangle

For Students 9th - 12th Standards
Triangles are not all created the same. The instructor shows how to find the area of different types of triangles using the formula. She also includes an example requiring coordinate geometry.
Instructional Video3:02
Curated OER

Area of a Rectangle - Geometry Help

For Teachers 4th - 7th
How on earth is one to find the area of a rectangle when he doesn't know the width? Using the diagonal of the rectangle, the length, and the Pythagorean Theorem the missing side is determined and the area is discovered. This clip is...
Instructional Video3:36
Curated OER

Area of a Triangle - Geometry Help

For Teachers 4th - 7th
Do you know what A=1/2 bh means? If you don't this video on the area of a triangle is a must. It defines the formula needed to determine the area of a triangle, works through an example problem, and clearly explains the procedure.
Instructional Video2:42
Curated OER

Area of a Parallelogram - Geometry Help

For Teachers 7th - 12th
Work the problem shown in this video to learn how to determine the area of a parallelogram. Basic algebra, area, and the Pythagorean Theorem are used to find the missing value and solve the problem of area.

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