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

1. Area of a Triangle - three page lesson, practice questions are found on page 3
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.
3. Area of a Triangle - several ways to compute the area of a triangle
4. Area of a Triangle - interactive lesson plan from Illuminations
5. Area of a Triangle - explanation, examples and practice exercises to check student understanding
6. Area of an Irregular Rectangle - calculate the area of each figure given
7. Area of Complex Figures - self check, multiple-choice quiz
8. Area of Parallelograms - self check, multiple-choice quiz
9. Area of Parallelograms and Trapezoids - multiple-choice quiz from IXL math
10. Area of Parallelograms, Triangles, and Trapezoids - self check, multiple-choice quiz
11. Area of Parallelograms, Triangles, and Trapezoids - chapter test, multiple-choice quiz
12. 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
13. Area of Squares and Rectangles - multiple-choice quiz from IXL math
14. Area of Triangles - multiple-choice quiz from IXL math
15. Area of Triangles - How to find areas of triangles using the formula: A = ˝base×height
16. Area of Triangles - self check, multiple-choice quiz
17. Area of Triangles and Trapezoids - self check, multiple-choice quiz
18. Areas and Squares - five multiple-choice questions
19. Baseball Geometry - area of a triangle game from Knowledge Box, you get baseballs to swing at for getting a correct answer
20. Calculating the Area of a Triangle - explanation, examples, practice exercises, and a quiz designed as a game
21. How Do You Find the Area of a Triangle - [3:54] math video answering the question
22. Interactive Triangle - Click on the red points in the Java Window to manipulate the triangle. Use the buttons to show the calculated area in each of the three calculations
23. Measuring Area and Volume - chapter test, multiple-choice quiz
24. Triangle Explorer - an applet which allows students to study the nature of triangles and their area
25. Triangles - self check, multiple-choice quiz

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