Lessons tagged with "triangles"
Describe Shapes
- Grade:
- 1
- Subject:
- Math
This geometry lesson covers identifying two-dimensional shapes by their attributes. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students will describe the attributes of a shape that are always true and sometimes true, and then match various shapes to the correct bin. Shapes identified are triangles, rectangles, squares, circles, pentagons, and hexagons.
Use a Property of Triangles to Solve for Unknown Angles
- Grade:
- 4
- Subject:
- Math
This measurement and geometry lesson focuses on using a property of triangles to solve for unknown angles. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students list the given angle measurements, then solve for the unknown angle by adding the given angle measurements and subtracting the sum from 180 degrees. Finally, they interpret the measurement of the angle. In addition to the lesson, there are four pages of Independent Practice and review with questions modeled after current adaptive testing items.
Classify Triangles by Their Attributes
- Grade:
- 4
- Subject:
- Math
This measurement and geometry lesson focuses on classifying triangles by their attributes. The lesson includes research-based strategies and questions that help prepare students for assessments. In this lesson, students identify equal sides on a triangle and classify the triangle by its sides. In addition to the lesson, there are triangle flashcards and four pages of Independent Practice and Periodic Reviews with questions modeled after current adaptive testing items.
Construct Triangles
- Grade:
- 7
- Subject:
- Math
This geometry lesson covers how to construct triangles using a ruler, protractor, and compass. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, the teacher constructs the triangle with the given conditions, labeling the sides and angles. Then, students do a different construction of the same triangle, and check it by measuring the three side lengths and angles. An animated demonstration is provided.
Apply the Pythagorean Theorem (Unknown Side Length)
- Grade:
- 8
- Subject:
- Math
This geometry lesson teaches students how to apply the Pythagorean Theorem to determine unknown side lengths in a right triangle. The lesson includes research-based strategies and strategic questions that prepare students for assessments. In this lesson, students will use the Pythagorean Theorem to find the lengths of the sides of a triangle. This lesson also includes real-world word problems.
Prove That Two Triangles are Similar
- Grade:
- High School
- Subject:
- Math
This math lesson teaches students how to use the Angle-Angle or the Equal Side Ratio theorem to prove that two triangles are similar. The lesson includes research-based strategies and strategic questions that prepare students for standardized assessments. In this lesson, students will identify known information and determine which theorem applies, then use the theorem to prove the triangles similarity. In addition to the lesson, there are two pages of independent practice and three pages of periodic review with questions modeled after standardized assessments.