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5th Grade - Triangle Area

Develop the formula for the area of a triangle as it relates to the area of a parallelogram/rectangle. 0506.4.1


Links verified on 06/10/2026


  1. Area of a Triangle - three page lesson, practice questions are found on page 3 This site includes questions for your students to check their understanding
  2. Area of a Triangle - Drag the orange dots on each vertex to reshape the triangle. The formula shown will recalculate the area using this method. Several ways to calculate triangle area are listed. This site is interactive and allows students to play a game or input or collect data
  3. Area of a Triangle - several ways to compute the area of a triangle
  4. Area of a Triangle - Follow Khan Academy as they show how the area of a triagle and a parallelogram is found. (Video)
  5. Area of Parallelograms and Trapezoids - multiple-choice quiz from IXL math This site includes questions for your students to check their understanding
  6. Area of Plane Shapes - several plane shapes are listed with the formula for calculating their area, at the end of the page you will find links to ten questions to check student understanding This site includes questions for your students to check their understanding
  7. Area of Squares and Rectangles - multiple-choice quiz from IXL math This site includes questions for your students to check their understanding
  8. Area of Triangles - multiple-choice quiz from IXL math This site includes questions for your students to check their understanding
  9. Calculating the Area of a Triangle - explanation, examples, practice exercises, and a quiz designed as a game This site includes questions for your students to check their understanding
  10. Triangle Explorer - an applet which allows students to study the nature of triangles and their area This site is interactive and allows students to play a game or input or collect data



A resource for the teacher to use in planning their lessons site for teachers | A PowerPoint show related to this standard PowerPoint show | An Adobe Acrobat document in .pdf format Acrobat document | A Microsoft Word document to be downloaded Word document | This interactive site would work well on an interactive whiteboard whiteboard resource | This resource includes voice instructions for students sound | A video is available through this link video format | This site is interactive and allows students to play a game or input or collect data interactive lesson | This site includes questions for your students to check their understanding a quiz | A lesson plan can be found at this site lesson plan | This link includes something for the teacher to print to print

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