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- Grade Range
- 10th
- Rating
Students work together to write a geometric proof. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students practice writing formal two column geometric proofs involving congruent triangles and congruent corresponding parts. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students select a geometric figure and find an example of the figure in their surroundings. They photograph the figure and write a proof to accompany it. They match photos to proofs. Full Review »
- Grade Range
- 7th - 12th
- Rating
Students demonstrate understanding by identifying and giving examples of undefined terms, axioms, theorems, and inductive and deductive reasoning. They also write geometric proofs, including proofs by contradiction. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students create graphic organizers to visually represent geometric concepts. Working in small groups, students develop five graphic organizers that fit a particular proof. Diagrams are presented to the class. Full Review »
- Grade Range
- 9th - 10th
- Rating
Students review postulates and discuss intersections. They analyze how statements are postulates or theorems. They solve problems by discussing the theorems and thinking about the proof. 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
- 10th - 12th
- Rating
Students review the postulates of algebra that have a significant relationship to geometry. Students complete proofs through the use of geometric properties and principles. This lesson is a continuation of a previous lesson on proofs. Full Review »
- Grade Range
- 9th - 11th
- Rating
Students use unit squares to show the Pythagorean Theorem is true and write a geometric proof of the Pythagorean Theorem. They use unit cubes to draw triangles and squares. In addition, questions for review are included in plan. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students engage in a lesson that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the importance of classifying the triangles. Full Review »
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