This SMART whiteboard activity will help students learn the formula for finding the area of a triangle. Students will practice what they have learned by using examples created for visual and kinesthetic learners.

[Free Registration/Login Required] This lesson presents an introduction to triangles and the methods of identifying them. It includes opportunities for students to interactively identify triangles. It also includes: assessment questions...

[Free Registration/Login Required] This lesson helps teach congrence in triangles. Includes practice with postulates, theorems, and logical reasoning.

[Free Registration/Login Required] This lesson covers methods of classifying triangles, both according to the length of their sides and by the measure of their interior angle.

[Free Registration/Login Required] The teacher will use this lesson plan to review product triangles.

[Free Registration/Login Required] In this flipchart, students use the interactive features of Activstudio to understand how to use the properties of perpendicular bisectors, angle bisectors, medians and altitudes of a triangle.

[Free Registration/Login Required] Classify angles by their side and angles. Find angles and measure in triangles.

[Free Registration/Login Required] This flipchart introduces students to the different types of triangles and how to classify them.

[Free Registration/Login Required] This flipchart explores the formula for finding the area of a triangle. Examples and hints are given to help students. A video clip is included, showing how to find the height of a triangle, given the...

[Free Registration/Login Required] Use this flipchart to help your high school students understand right triangles using the Pythagorean Theorem.

[Free Registration/Login Required] This lesson is an exploration of variations of right triangles. Use as a warm up on square roots introduced in this flipchart. [Requires Adobe Reader.]

[Free Registration/Login Required] Using this flipchart students learn to recognize and classify different triangles, including equilateral, isosceles and scalene. The teacher will use this lesson plan to review different types of...

[Free Registration/Login Required] This flipchart is designed to accompany fourth grade's Everyday Math (version 3) lesson 1.3, this flipchart explores different types of angles, triangles and quadrangles through engaging presentation...

[Free Registration/Login Required] This flipchart contains an introduction to congruent triangles. It also introduces logic (p->q) including bi-conditional statements. A challenge is presented to students.

[Free Registration/Login Required] Students will identify right, acute and obtuse triangles using many interactive tools available in ACTIVstudio 3.0. Students will be engaged using a magnifier tool, the fill tool, and drag and drop and...

[Free Registration/Login Required] Pythagorean triples described using a number of triangles. Pythagorean Theorem reinforced using squares and triangles. Assessment built in.

[Free Registration/Login Required] This flipchart is a review of calculating the area of squares, rectangles, and triangles for fifth graders. It also includes problems that work backwards from the area to find missing dimensions. It...

[Free Registration/Login Required] This flipchart defines and uses the law of cosines to find the missing sides and angles of oblique triangles.

[Free Registration/Login Required] This creative and engaging flipchart explains the area of all kinds of shapes, to include squares, parallelograms, rectangles, triangle, and trapezoids.

[Free Registration/Login Required] This flipchart shows the basic relationships between trig functions and the sides and angles of a right triangle.

[Free Registration/Login Required] This flipchart is a simple diagram showing the sides and triangles in a polygon.

[Free Registration/Login Required] This flipchart looks into the concept of CPCTC with triangles, using proofs. This flipchart has interactive parts, video, and voting.

[Free Registration/Login Required] Students will be able to identify patterned numbers as related to Pascal's Triangle.

[Free Registration/Login Required] This flipchart is designed for an early childhood classroom and focuses on circles, squares, rectangles, and triangles. Opportunities provided for student participation include drawing plane shapes,...