Curated OER
Is It Right Angled Triangle?
For this right angle triangle worksheet, students check whether the four given triangles are right angled triangles using the Pythagorean Theorem.
Curated OER
Area of Right-Angled Triangles
There's a trick to solving the area of a triangle, and it involves a skill your geometers have already mastered. Help them discover the connection between finding a rectangle's area and finding a right triangle's area as they solve for...
Corbett Maths
Showing a Triangle Is Right Angled
Determine whether it is right or not. Using the Pythagorean Theorem, the video shows how to determine whether a triangle is a right triangle. Pupils practice the skill in a few of the problems in the associated worksheets on the...
Curated OER
Angling Your Way Through a Picture
Students look at the geometry in an artwork. In this art history/geometry lesson, students research the artist Charles Sheeler and look at his painting Stacks in Celebration. They find the different types of lines, angles, and planes and...
Curated OER
Angling for a Story
Students explore different news angles relating to a local sporting event, then create a detailed treatment of the story prior to reporting it.
Curated OER
Getting It Right! An Investigation of the Pythagorean Theorem
Learners construct a variety of right triangles using a right-angled set square, cutting corners from pieces of paper or cardboard, and using dynamic geometry software. They measure the sides of these various right triangles and record...
Curated OER
Angling for Distance
Explore the concept of projectile distance through determining the angle that will provide the maximum distance of a launched projectile. Students launch baseballs on a football field and video tape the path of the ball.
Curated OER
Number Sense and Numeration: Square Roots
In this square roots worksheet, 8th graders solve 14 different types of problems to include determining the square root of a number of problems, determining the area of a rectangle and the length of a side of a square with the same...
Curated OER
Color Kaleidoscopes
Students construct kaleidoscopes to demonstrate how an image is multiplied by angled mirrors before light rays reach their eyes. They follow step-by-step directions to create a kaleidoscope, and draw illustrations of the repeating...
Curated OER
Lead Up Skills fo Tchoukball
A simple lesson to practice the throwing and catching skills for the game of Tchoukball. There are several warm-up activities to have the class practice tossing a ball around. Then the main drill is organized much like a basketball...
Curated OER
Math: Investigating Triangles
Tenth graders identify the trigonometric ratios for right angled triangles. Through independent investigation, they discover the constancy between the ratios of any two sides of similar triangles. In an alternative method, 10th graders...
Curated OER
Pythagorean Theorem
In this Pythagorean theorem worksheet, 9th graders solve and complete 6 various types of problems. First, they find the length of a right-angled triangle's hypotenuse. Then, students determine which triangle is described and explain...
Curated OER
Seasonal Cycles And Changes
Second graders recall the affect of direct and angled sunlight on the seasons, describe some results of warming soil and air in spring, predict the changes in buds when twigs are placed in water, and taste a product of tree sap and...
Curated OER
How We See Things
Students study light. For this lesson on light, students discuss how flat and angled mirrors reflect light and draw a picture showing how a mirror reflects light into an eye.
Curated OER
T-Angling with Words
In this geometry roots worksheet, 10th graders solve and complete 22 various types of problems. First, they match the geometry word roots on the left with their meanings found on the right side. Then, students list as many other geometry...
Curated OER
Gougu Rule or Pythagoras' Theorem
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.
Curated OER
Pythagoras' Theorem
In this triangles worksheet, students solve 40 problems in which Pythagoras' theorem is used to check if a triangle is right-angled. This page is intended for online use but may be completed on paper.
Curated OER
Investigating the Idea of Sin
Fifth graders use sin to solve problems involving right-angled triangles, Solve equations of the form sin(++) = a, for a between -180++ and 360++. They State and graph the value of sin(++) in special cases. They describe some of the ways...
Curated OER
Introducing Polygons
In this polygons activity, students name the 6 different colored shapes, choose any 3 polygons to draw and color on a grid, while adding a right angled triangle and a rhombus.
Curated OER
Classifying Triangles
This presentation shows how triangles are classified by angle measurement and length of sides. It reviews isosceles, scalene, obtuse, right, and acute classifications and includes questions for students to classify some of the triangles...
Curated OER
Types of Triangles
As a reference sheet for types of triangles, this worksheet would be good for students to keep in their binder or to take notes about; however, it would need to accompany an existing lesson as there is no activity beyond basic...
Curated OER
Roaming Robot
Students give directions to help a classmate find an object. In this direction lesson plan, students tell the finder where to travel and how many steps to take. More difficult directions include angled turns.
Curated OER
Pythagoras's Theorem
Students explore Pythagoras' Theorem. In this geometry instructional activity, students complete 4 pages of equations using Pythagoras's Theorem. Students complete 14 problems.
Curated OER
Using Trigonometry
Fifth graders explore the use of trigonometry to find unknown sides and angles in right-angled triangles, taking the concepts that were developed in the previous unit and looking at different ways of practicing the new skills. Students...