912Geometry

912Geometry_AngleBisector_Warmup_Construct_AngleBisectorWarmup

This warm up is designed for geometry students learning about angle bisectors. A picture of a segment bisecting an angle is given, along with five choices for setting up the equation to solve for the measure of each angle. A word bank and a sentence starter are provided to aid in the construction of an argument determining how to solve for the variable. Students are asked to create a claim and use prior knowledge as evidence to support the argument.

Microsoft Word version: 912Geometry_AngleBisector_Warmup_Construct_AngleBisectorWarmup

PDF version: 912Geometry_AngleBisector_Warmup_Construct_AngleBisectorWarmup

912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct

This task is used as a warmup in geometry classes. The task focuses on classifications of triangles, and the postulates that come with the relationships between side lengths and angles. One problem asks students to construct an argument about scalene triangles and their angles. Students are also asked to find the midpoint of a line segment on a coordinate plane.

Microsoft Word version: 912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct_1

PDF version: 912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct_1

912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct

This warm up is created for geometry students learning about triangles. There are three problems, one asking students to find the midpoint of a segment on a coordinate plane, another asking students to construct an argument to justify a claim, and another asking students to classify triangles. Argumentation language is used in the first two problems, encouraging the use of evidence.

Microsoft Word version: 912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct

PDF version: 912Geometry_ClassifyTrianglesMidpoint_Warmup_Construct

912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup

This warm up is created for geometry students studying special right triangles. In two examples, students are given a side length and an angle measurement and must find the other two side lengths. Students are to construct an argument defending one of their side lengths in the final problem.

Microsoft Word version: 912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup_1

PDF version: 912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup_1

912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup

This warm up is created for geometry students studying special right triangles. In two examples, students are given a side length and an angle measurement and must find the other two side lengths. Students are to construct an argument defending one of their side lengths in the final problem.

Microsoft Word version: 912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup

PDF version: 912Geometry_SRT_SpecialRightTriangles_Warmup_Construct_SpecialRightTrianglesWarmup

912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityWarmup

This similarity warmup has geometry students focus on the definition of similar triangles and has students engage in one practice problem. Students are asked to fill in the blanks providing definitions for similar triangles, focusing on congruent angles and proportional side lengths. Students must construct an argument telling why two triangles are or are not similar.

Microsoft Word version: 912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityWarmup

PDF version: 912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityWarmup

912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityandDilationsWarmup

Similarity and Dilations Warmup is geared towards geometry students. The task provides two triangles on a coordinate plane and asks students to determine if the triangles are similar and construct an argument that supports the answer. The task does not provide measurements of the sides of the triangle and requires students to be able to read the coordinate plane as well as identify similar triangles.

Microsoft Word version: 912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityandDilationsWarmup

PDF version: 912Geometry_SRT_SimilarTriangles_Warmup_Construct_SimilarityandDilationsWarmup

912Geometry_SRT_PythagoreanTheorem_Warmup_Construct_PythagoreanTheoremWarmup

This warm up is designed for geometry students learning the Pythagorean Theorem. The first two problems contain a triangle with a missing side length that students need to solve for. The third question asks students to use argumentation language to construct a justification for one of their answers. An answer key is provided, with key pieces of information that should be included in the argument.

Microsoft Word version: 912Geometry_SRT_PythagoreanTheorem_Warmup_Construct_PythagoreanTheoremWarmup

PDF version: 912Geometry_SRT_PythagoreanTheorem_Warmup_Construct_PythagoreanTheoremWarmup

912Geometry_CorrAngles_Warmup_ConstructCritique_CritiquingReasoningProblems

Critiquing Reasoning Problems is a task created for geometry students learning about corresponding angles. Students are given four problems and must either construct an argument or critique another’s reasoning with a claim and evidence. Vocabulary such as alternate-exterior angles, same-side exterior angles, and linear pair are used, alongside pictures and proofs to supplement the questions.

Microsoft Word version: 912Geometry_CorrAngles_Warmup_ConstructCritique_CritiquingReasoningProblems

PDF version: 912Geometry_CorrAngles_Warmup_ConstructCritique_CritiquingReasoningProblems

912Geometry_CO_TriangleCongruence_Warmup_Construct_CongruencePostulates

This warm up is created for geometry students learning triangle congruence postulates. Students are given two problems, one with two triangles that share a side and one with two separate triangles. The questions contain argumentation language and ask students to construct an argument determining if the triangles are congruent.

Microsoft Word version: 912Geometry_CO_TriangleCongruence_Warmup_Construct_CongruencePostulates

PDF version: 912Geometry_CO_TriangleCongruence_Warmup_Construct_CongruencePostulates