Picking up where the prior installment in the series on HeronÕs formula ended, Sal provides a deeper, more detailed explanation of this topic.

Providing the first installment in a series devoted to the exploration of Heron's Formula, this video is a high-level experience that delves into a proof using algebra. It demonstrates a step-by-step process for finding the area of a...

Introducing Heronês formula is the main objective of this lecture. Essentially, it describes how to solve a problem. Heron's formula is given, and then a problem is solved. Since the actual explanation of the formula will be given during...

Finding the area of each of the triangles that are created by drawing two diagonal lines through a rectangle is explored in this lecture. It provides a detailed explanation of how to use a formula to solve the given problem. Tip: Use...

Finding the area of each of the triangles that are created by drawing two diagonal lines through a rectangle is explored in this lecture. It provides a detailed explanation of how to use a formula to solve the given problem. Tip: Use...

Your algebra learners emphasize the"geometric" in geometric series as they use a common ratio between algebraic terms and find that it corresponds to a repeated similarity transformation. 

While the instructional activity focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in...

Step-by-step, viewers are taught how to use one angle to find the area of a triangle. This video is useful for your trigonometry learners, especially if you employ a flipped classroom model. Mathematicians can view this at home and them...

Using coordinates to draw a rectangle, help learners understand the relationship between the given order pairs used as the vertices and the length of its joining sides. This is the second video in a series of four using geometry to solve...

Using CAS TI-Nspire, explore how the area of a triangle formed by the x- and y-axes and a line through a point is related to the slope of a line. Additionally, the lesson serves as an introduction to rational functions and the concept of...

Have your learners practice finding the perimeter and area of geometric shapes using this resource. While just a simple review, this could be a wonderful way to solidify the concepts in their minds.

Help your class visualize how to find the area of a triangle. In a step-by-step process, the instructor shows how to calculate the area of a triangle. Great for instruction and/or review.

For this triangle worksheet, students read about the formula for finding the area of a triangle, then find areas for 9 triangles. Houghton Mifflin text is referenced.

This unit enables scholars to apply the rule for area of a triangle (area equals half base times height). They practice multiplication and division strategies as they calculate areas.

In this geometry learning exercise, 10th graders find the base, height, or area of a triangle. The one page interactive learning exercise contains ten questions. Answers and hints are included. 

In this area of a triangle worksheet, high schoolers solve 6 graphing problems. Students find the area of a triangle given the three coordinates of the vertices.

Tenth graders investigate area of a triangle. For this geometry lesson, 10th graders explore the technique of finding the area of a triangle by surrounding them with rectangles and subtracting right-triangle areas. The lesson uses a...

Students investigate the area of a triangle.  In this geometry lesson, students use technology (TI-nspire) to explore what happens to the area of a triangle as one vertex moves along a line parallel to the side opposite the vertex.

Determine the area of a piece of land using this real-life activity. Learners will determine the cost of a piece of land given cost per acre and the land dimensions. They also use their Ti-73 to find the area of a triangle.

In this geometry worksheet, 10th graders determine the area of triangles and parallelograms. The one page interactive worksheet contains ten questions. Answers and hints are included. 

In this area of a triangle worksheet, students calculate the area of six triangles given the coordinate of the vertices. Grids are provided.

Students find the area of a triangle. For this area lesson, students see how to find the area of a triangle. They try a couple problems on their own. 

In this geometry worksheet, students solve problems by finding the area of a triangle. They are given the sides and asked to solve using the Pythagorean Theorem. There are 72 problems.

Fifth graders investigate the area of a triangle. In this geometry lesson, 5th graders practice finding the area of a triangle using the correct formula: 1/2bh.