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- Grade Range
- 6th - 8th
- Rating
Students develop the area formula for a triangle. They find the area of rectangles and squares, then compare them to the areas of triangles derived from the original shape. Full Review »
- Grade Range
- Kindergarten - 1st
- Rating
Students listen to the book, The Greedy Triangle, and identify triangle shapes found in the classroom and school grounds. They construct sailboats using triangles. Full Review »
- Grade Range
- 4th
- Rating
Students discover angles and their relationship to triangles. After a lecture/demo, students access websites and a worksheet imbedded in this plan to gain practice measuring triangles. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students classify the triangles formed in a plane when a randomly selected point is connected to the endpoints of a given line segment. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students use pasta to create models of triangles and non-triangles and investigate the relationship between the longest side of the triangle and the sum of the other two sides of the triangle. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students explore different classifications of triangles. Students define geometric terms associated with triangles. Following a step-by-step process, introduced and completed in class, they solve a proof. Full Review »
- Grade Range
- 5th - 7th
- Rating
Students explore congruent triangles. Using sticks, they construct a triangle, define key vocabulary terms, and write three ways to prove that a triangle is congruent. Full Review »
- Grade Range
- 4th
- Rating
Students use two different techniques to construct triangles with specific dimensions. They determine how to construct nets for three-dimensional objects focusing on those made with equilateral triangles. They are able to name the objects upon completion of this unit of lessons. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students engage in a lesson that is about triangles and the knowledge is based on angles and sides. They practice using logical thinking in order to draw conclusions about triangles. Students also classify different triangles according to the angles measured. Full Review »
- Grade Range
- 6th - 12th
- Rating
Students are introduced to The Geometer's Sketchpad software while in the computer lab. They focus on triangles, horizontal lines, vertex and top parallel lines. Each student utilizes geometry to complete basic geometric constructions. Full Review »
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