Lesson Plan
Curated OER

Geometry of Triangles Using a Protractor

For Teachers 7th
Seventh graders use a protractor to measure angles and solve a problem involving distance. For this measuring angles with a protractor lesson plan, 7th graders calculate the distance of a line on a diagram by using a protractor to...
Worksheet
Curated OER

Geometry: Calculating Perimeters

For Students 9th - 12th
In this perimeter worksheet, students find the perimeter of 3 polygons. Students find the perimeter of irregular polygons given various side lengths.
Worksheet
Helping with Math

Geometry: Areas of Triangles

For Students 7th - 9th Standards
For this areas of triangles instructional activity, students observe given polygons. They determine the area of triangles, rectangles and compound figures. This one-page instructional activity contains 5 multi-step problems. This...
Lesson Plan
Curated OER

5 Vector Geometry

For Teachers 10th - 12th
Young scholars imagine the way lines look. In this vector instructional activity, students recognize how to find a vector equation, Cartesian equation or perpendicular distance. Young scholars find angles between planes. Students...
Lesson Plan
Curated OER

Geometry Practice: Area of Polygons #9

For Teachers 9th - 11th
In this area of polygons worksheet, students find the area of 12 polygons. Each shape is drawn on a grid. The area of each square on the grid is given. Problems are all multiple choice.
Lesson Plan
Curated OER

Geometry Practice: Area of Polygons #8

For Teachers 9th - 12th
In this area of polygons worksheet, high schoolers solve 7 short answer and multiple choice questions about area.  Students find the area of triangles given base and height, or points in the coordinate plane.
Lesson Plan
Curated OER

Geometry- Coordinate Plane

For Teachers 6th - 8th
Students plot points on a coordinate grid.  In this coordinate plane lesson, students use a coordinate grid to locate the perimeter points of pictures, identify quadrants and use the coordinate points to draw the picture on a blank...
Worksheet
Curated OER

Measuring Angles

For Students 6th - 7th
In this math worksheet, students use protractors to measure each of a set of angles. This is a worksheet generator, the teacher controls the minimum and maximum angles students are presented with as well as whether or not to rotate...
Worksheet
Curated OER

Locating Points

For Students 7th - 9th
In this math worksheet, students write the coordinates of points that have been plotted on a coordinate plane. This worksheet generator allows teachers to select the size of the grid and whether or not to use negative coordinates. An...
Worksheet
Curated OER

Coordinate Plotting: Shapes

For Students 6th - 8th
In this math worksheet, students graph ordered pairs on a coordinate grid. They connect the points to create a geometric shape. This worksheet generator allows teachers to select the size of the grid, the complexity of the shapes, and if...
Lesson Plan
PBS

Arguing over Area

For Teachers 2nd - 3rd Standards
With the help of the Area Officers and Perimeter Patrol, you learners will develop a better understanding of area and its relationship to perimeter. First, they view a video clip from Cyberchase, and then they visit a website to...
Lesson Plan
EngageNY

The Power of Algebra—Finding Pythagorean Triples

For Students 10th - 12th Standards
The Pythagorean Theorem makes an appearance yet again in this lesson on polynomial identities. Learners prove a method for finding Pythagorean triples by applying the difference of squares identity. 
Activity
Curated OER

Sunken Treasure

For Teachers 8th - 10th Standards
You've located buried treasure, now what? Explore how to use algebraic and geometric methods to determine where to place a recovery ship based on the location of the treasure.
Lesson Plan
Curated OER

Learning Unit: The Pythagorean Theorem

For Teachers 8th - 10th
Middle and high schoolers research the life of Pythagoras and the Pythagorean theorem. They write a short biography of Pythagoras and learn to apply the theorem in their study of right triangles.
Lesson Plan
National Security Agency

Classifying Triangles

For Teachers 4th - 8th Standards
Building on young mathematicians' prior knowledge of three-sided shapes, this lesson series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy...
Lesson Plan
Bowland

Mission: Rainforest

For Teachers 6th - 9th
Young environmentally conscious mathematicians solve a variety of problems related to the central theme of uncovering illegal logging activities. They determine a base camp based on given constraints, investigate logging activities and...
Printables
Mr. Williams Maths

Eight Circle Theorems Page

For Teachers 8th - 12th Standards
Your learners will find these circle theorems nicely organized with diagrams included that present the geometric relationships between the circle circumference, chords, central and circumference angles and tangents.
Lesson Plan
EngageNY

Using Unique Triangles to Solve Real-World and Mathematical Problems

For Students 7th Standards
How can congruent triangles help mark a soccer field? This is just one question your classes can answer after solving the real-world problems in the lesson plan. Each example posed through a word problem elicits higher-order thinking and...
Lesson Plan
EngageNY

Area Problems with Circular Regions

For Teachers 7th Standards
Uncover strategies for finding areas of composite figures. The 23rd lesson in a 29-part module has young mathematicians decompose figures to find total area. Figures decompose to rectangles and circular regions.
Interactive
CK-12 Foundation

Large Decimal Rounding to Decimal Representations: Weighing a Whale

For Students 4th - 8th Standards
An interactive challenges mathematicians to round large numbers with help from a large scale that measures the weight of a blue whale. The practie's five questions include multiple-choice, fill-in-the-blank, true or false, and an open...
Interactive
CK-12 Foundation

Add and Subtract Decimals with Front-End Estimation: Wooden Beams

For Students 6th - 8th Standards
A six-question interactive tasks mathematicians to solve addition and subtraction problems using front-end estimation. Question types consist of multiple-choice and true or false. A set of wooden beams that can be measured using moveable...
Lesson Plan
Curated OER

The Sum of Our Integer Intelligences

For Teachers 7th - 8th
Young mathematicians explore integers. They review adding integers through engaging in mathematical labs. Each lab station is designed to reflect one of the multiple intelligences. Resources for all activities are provided.
Worksheet
Super Teacher Worksheets

Solid Figures

For Students K - 5th Standards
In the hustle and bustle of everyday life it's easy to forget that geometric shapes are everywhere in the world around us. As they complete this shape identification worksheet, young mathematicians realize that many common real-life...
Handout
McGraw Hill

Triangles

For Students 4th - 7th Standards
After reviewing characteristics of seven types of triangles, young geometers discover how to find the missing angle of a triangle. Then, they practice identifying triangles, find missing angles, and find missing side lengths of...

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