Worksheet
Curated OER

Area of Triangles

For Students 5th - 6th
In this area of triangles worksheet, students calculate the area of 4 given triangles, writing the answers in rectangles beneath each. A reference web site is given for additional activities.
Lesson Plan
Curated OER

ARE YOU A TRIANGULATEER?

For Teachers 3rd - 6th
Learners explore about triangles and their relationship to the worlld around them. They are able to identify triangular shapes in their environment. Students are able to communicate to one another their understanding of triangles outside...
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 6th - 8th
Middle schoolers engage in a study of the Pythagorean Theorem to classify the hypotenuse of a triangle. The teacher uses examples from the lesson to aid students in comprehension of solving problems that involve problem solving. They...
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 9th - 12th
Students are introduced to the Pythagorean theorem. They use three different activities that give students the opportuntiy to observe triangles, and use the Pythagorean theorem and practice different ways of determining areas of...
Worksheet
Curated OER

The Pythagorean Theorem

For Students 9th
In this Pythagorean theorem instructional activity, 9th graders solve and complete 8 different problems that include using the Pythagorean theorem to solve. First, they find the missing measure in each right triangle. Then, students make...
Lesson Plan
Curated OER

Gougu Rule or Pythagoras' Theorem

For Teachers 5th
Fifth graders explore Pythagoras' Theorem. They examine the pattern linking the length of the hypotenuse of a right angled triangle and the length of the other two sides. Students find an unknown side in right angled triangles.
Lesson Plan
Curated OER

How Fire Burns

For Teachers 3rd - 4th
Young scholars observe teacher demonstration, discuss Fire Triangle, examine three things that fire needs to continue burning, including fuel, oxygen, and heat, and discuss how Stop, Drop, and Roll strategy is safest method of stopping...
Lesson Plan
Curated OER

Introducing Trig

For Teachers 5th
Fifth graders explore the importance of triangles in the real world. They find the unknown side of a right triangle using a scale drawing. Students use Pythagoras' Theorem and other appropriate ratios.
Worksheet
Curated OER

Pythagorean Theorem Homework

For Students 9th - 10th
In this Pythagorean theorem worksheet, students determine if given side lengths for right triangles, find the length of the missing side in right triangles, and find the length of the diagonals formed in boxes given side lengths.
Worksheet
Curated OER

The Pythagorean Theorem

For Students 9th
In this Pythagorean theorem worksheet, 9th graders solve and complete 16 different problems that include using the Pythagorean theorem to solve each one. First, they find each missing measure given the hypotenuse of a right triangle....
Lesson Plan
Curated OER

Shapes

For Teachers K
Students review basic shapes, such as circles, squares, triangles, and rectangles, find objects in those shapes in classroom, watch Clifford's Fun with Shapes video, practice reproducing four shapes, and rotate through four classroom...
Worksheet
Curated OER

Geometric Mean and the Pythagorean Theorem

For Students 10th
In this geometric mean and the Pythagorean Theorem learning exercise, 10th graders solve 16 different problems that determine the geometric mean of numbers by applying the Pythagorean Theorem. First, they find the geometric mean between...
Organizer
Curated OER

Classifying Shapes Using Venn Diagrams

For Students 3rd - 5th
In this classifying shapes using Venn diagrams worksheet, students draw examples of isosceles, right, and equilateral triangles in the proper sections of the first graphic organizer. They draw polygons, both regular and quadrilaterals,...
Worksheet
Curated OER

Law of Sines and Cosines

For Students 10th - 12th
For this sine and cosine worksheet, students solve given triangles using the law of sines and cosines. They determine the area of triangles. This three-page worksheet contains 12 multi-step problems.
Worksheet
Curated OER

Chapter 8 Worksheet 2 Area of Polygons

For Students 7th - 12th
In this area of polygons activity, students compute the area of squares, rectangles, triangles, trapezoids and parallelograms. Given the area of polygons, students determine the missing dimension of the figure. This two-page activity...
Lesson Plan
Curated OER

Hospital Locator

For Teachers 7th - 9th
Young scholars apply properties of triangles to the real world. In this geometry lesson, students identify the median and angle bisectors of triangles. They plan the appropriate are to place a new medical center based on their knowledge...
Lesson Plan
Curated OER

Median

For Teachers 9th - 11th
Pupils solve problems involving triangles. In this geometry lesson, students use the properties of triangles to find the angles and side. They identify the median and altitude of the triangle.
Worksheet
Curated OER

Shapes

For Students K - 2nd
In this geometry worksheet, students choose the correct name to match the shape given. Students identify the words for oval, rectangle, square, circle, triangle, and diamond.
Worksheet
Curated OER

Surface Areas

For Students 6th - 8th
In this math instructional activity, students examine the measurements for the face of the triangle and trapezoid. Then they figure out the total surface area for each.
Worksheet
Curated OER

Geometric Shapes

For Students 1st - 3rd
In this geometric shapes worksheet, students respond to 4 multiple choice questions that require them to identify triangles, squares, and rectangles.
Worksheet
Curated OER

Find the 2D shape

For Students 2nd - 4th
In this 2D shapes worksheet, students find the rectangular prism, triangular prism, pentagon, and triangle. Students have 3 shapes to choose from in each of the 4 problems.
Lesson Plan
Curated OER

Lines In Geometry

For Teachers 8th - 10th
Students define important vocabulary words using a dictionary. In this geometry lesson, students identify and use properties of triangles to solve problems. They identify the median. altitude and angles as well as properties of...
Lesson Plan
Curated OER

Shapes...the Beginning of Geometry

For Teachers K - 1st
Young scholars identify and name basic shapes and points. In this elementary geometry lesson, students use printable cut outs to name circles, triangles, and squares before playing a game with them. They play a game of "Pin the Tail on...
Worksheet
Curated OER

Identifying Types of Triangles

For Students 5th - 6th
In this triangle worksheet, students check the appropriate label for triangles: right, acute, obtuse, scalene, isosceles or equilateral. A reference web site is given for additional activities.