Texas Gateway: Making and Verifying Conjectures About Three Dimensional Figures

Who knew there were so many parts to a geometric solid?! Well, you probably did, and your pupils will, too, after watching a video lesson on three-dimensional figures. Instruction includes a description of the parts of solids, naming...

Given the relationship(s) among a set of angles, the student investigates the patterns and makes conjectures about the geometric relationships, including angles formed by parallel lines cut by a transversal.

Students will investigate patterns and make conjectures about geometric relationships.

Students will investigate patterns and make conjectures about geometric relationships, including interior angles of polygons.

Given information about the relationship(s) witnin one circle or a set of circles, the student will explore special segments and angles of circles.

Given examples of triangles and their component parts, the student will use explorations and concrete models to verify and apply the and find the sum of interior angles.

Lateral area and surface area are simple concepts, but calculating them is not as easy! Using formulas, learners calculate lateral area and surface area for the same three-dimensional figures. The resource discusses the formula variables...

Given a system of three linear equations, the student will solve the system with a unique solution.

Let's move into the third dimension! Learners explore the vocabulary and notation related to three-dimensional figures. The video covers examples of pyramids, but the vocabulary is universal to all 3-D objects.

Watch this tutorial to see how to use a net to identify the three-dimensional solid it represents. [7:57]