Curated OER
Perimeter and Area
Use this perimeter and area worksheet to have learners find the perimeter and area of shapes with right angles. They complete a total of nine problems.
Curated OER
Complementary Angles
Elementary schoolers find the missing angle in a complementary angle. This two-page worksheet contains six problems. Answers are provided.
Illustrative Mathematics
Painting a Barn
When painting a barn you have to calculate surface area, and that is exactly what this resource is about. Not only will your future home owners calculate the surface area, but also the cost. It is a real-life problem that every that...
Illustrative Mathematics
Base and Height
It is easy to find the area of a triangle where the base and the height are given. But in this resource, it is up to your geometers to identify the base and height of the triangle. In fact, your pupils will learn that there are three...
Curated OER
Designing a Fort
Students explore the concept of right triangles. In this right triangle lesson, students construct a scale model of a tourist attraction similar to Fort Jefferson. Students research aerial photos of Fort Jefferson, then build their...
Curated OER
Plenty of Pythagoras
Using a twelve foot knotted rope, students form a 3-4-5 right triangle. Following a discussion of observations about the lengths of the sides of the triangle, students use grid paper, scissors and a centimeter ruler to draw and measure...
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What's Your Angle
In this angle worksheet, students identify five shapes and then place them together to form a square. Afterward, they answer three questions regarding the number of right, acute and obtuse angles. This one-page worksheet contains a total...
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Triangles
In this triangle worksheet, students observe pictures of triangles. They name the triangles according to the length of their sides. Twelve right, equilateral and isosceles triangles are provided for identification on this one-page...
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Geometry Worksheet: Pythagoras' Theorem
In this Pythagorean Theorem worksheet, students use the Pythagorean Theorem to find the length of the unlabeled side of the right triangle. There are 8 problems all together.
Curated OER
Identify Triangles: Acute, Right, Obtuse, Straight
In this triangles worksheet, students draw angles with given measurements and identify each as either acute, right, obtuse or straight. A reference web site is given for additional activities.
Curated OER
Learning About Triangles
Upper graders label four triangles and fill in the labels correctly. They draw three original triangles and answer the questions about them.
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Draw Angles of Given Type
In this angle type worksheet, students draw 9 angles. Each angle is of a specified type rather than a given number of degrees.
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Classify Triangles
Here is a classifying triangles practice worksheet in which learners sharpen their problem solving skills as they solve six story problems.
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Similar Situations
Students explore intersecting lines. In this intersecting lines lesson, students investigate shapes consisting of parallel, perpendicular, and similar lines. Students investigate these lines in shapes around them.
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Sorting Angles
For this sorting angles worksheet, students distinguish the differences between right, obtuse and acute angles. Students determine what type of angle thirteen angles are as shown.
Curated OER
Describe Five Polygons
In this polygons learning exercise, students use the parallel, acute, right, obtuse, straight, and reflex to describe the five shapes provided.
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Identify Angles
In this angles practice worksheet, students respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse triangles.
Curated OER
Identifying Triangles
In this triangles practice worksheet, students respond to 4 questions that require them to identify the pictured triangles as acute, right, or obtuse triangles.
Curated OER
Identifying Angles
In this angles practice instructional activity, students respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse angles.
Curated OER
Measuring Angles
Sixth graders identify and measure right, acute, obtuse, and straight angles. In this geometry lesson, 6th graders review the definition of each angle and are shown examples of each specific angle. Students use toothpicks, gumdrops, and...
Curated OER
Measurement: The Size is Right
Specific learning goals are grouped for different grade levels spanning pre-kindergarten to eighth grade. After preparing the questions and materials, you call a learner to come in front of the class and play the game. Young learners...
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Right on Time
The hour is nigh for your class to practice equivalency problems in the form of time-zone conversions. They write equations to describe elapsed time and apply problem solving strategies, including writing a plan, to solve the problems.
Curated OER
Applying the Pythagorean Theorem
Learners use the Pythagorean Theorem to find the distances between two points. Use this Pythagorean Theorem lesson plan to have learners find the distances on a coordinate plane in small groups.
Curated OER
Task: Miniature Golf
"Fore!" All right, no one really yells this out in miniature golf, but this well-defined activity will have your charges using lots of numbers in their unique design of a miniature golf hole. Included in the activity criteria is the...
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