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- Grade Range
- 9th - 12th
- Rating
Students practice writing formal two column geometric proofs involving congruent triangles and congruent corresponding parts. Full Review »
- Grade Range
- 3rd - 4th
- Rating
Students discover three lettered postulates that prove triangles congruent. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students define and discuss congruency and the corresponding parts between congruent triangles. They create a pair of congruent triangles, test for congruency, and complete a worksheet. 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
- 9th - 12th
- Rating
Students, while exercising the art of questioning and predicting, practice on solving congruent triangles and the proofs of congruence independently and in groups. They analyze how questioning and predicting in math are strategies that keep the bridge between algebra and geometry in tact. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students explain the four basic ways to prove two triangles congruent. They analyze how congruent triangles may be used in the "real world". Students use deductive proof writing to prove two triangles are congruent. Full Review »
- Grade Range
- 8th
- Rating
Students explore similar and congruent figures and objects. They are given objects, figures, and geometric terms, students classify items by property. Pupils explore sets of congruent and similiar figures and use observations and measurement to make conjectures. Students make conjectures about ratio, and proportion. Full Review »
- Grade Range
- 9th - 11th
- Rating
Students use inductive and deductive reasoning to construct logical arguments and judge the validity of those arguments. They work in small groups to develop logical arguments to support or refute the validity of statements given. Full Review »
- Grade Range
- 9th - 11th
- Rating
Students draw similar or congruent triangles and will prove that the triangles they have drawn are similar. In small groups, they draw similar and congruent triangles from a reproducible. They write proofs to show that the triangles they have drawn are similar or congruent to the triangles on the reproducible. 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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