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From the 2015 AP Chemistry test free response 2d and 2e, a tutorial on Lewis electron-dot diagram and bond angles for ethanol. [6:20]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Subject:
Science
Material Type:
Audio/Video
Lesson
Provider:
11/14/2023
Educational Use
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Students will tell if a shape is 2-dimensional or 3-dimensional.

Subject:
Mathematics
Material Type:
Lesson Plan
Provider:
BetterLesson
12/01/2022
Educational Use
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I love graphic organizers. My students will increase their vocabularies by learning more 2D shape terms through the use of a graphic organizer.

Subject:
Mathematics
Material Type:
Lesson Plan
Provider:
BetterLesson
12/01/2022
Educational Use
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Identifying 2D shapes in common objects and sorting according to shapes connects the real world to learning shape names and attributes.

Subject:
Mathematics
Material Type:
Lesson Plan
Provider:
BetterLesson
12/01/2022
Educational Use
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Students practice creating rudimentary detail drawings. They learn how engineers communicate the technical information about their designs using the basic components of detail drawings. They practice creating their own drawings of a three-dimensional block and a special LEGO piece, and then make 3D sketches of an unknown object using only the information provided in its detail drawing.

Subject:
Engineering
Science
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Benjamin S. Terry
Brandi Briggs
Denise W. Carlson
Stephanie Rivale
09/18/2014
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CC BY-NC
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Subject:
Mathematics
Material Type:
Full Course
Provider:
Pearson
02/28/2022
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Zooming In On Figures

Unit Overview

Type of Unit: Concept; Project

Length of Unit: 18 days and 5 days for project

Prior Knowledge

Students should be able to:

Find the area of triangles and special quadrilaterals.
Use nets composed of triangles and rectangles in order to find the surface area of solids.
Find the volume of right rectangular prisms.
Solve proportions.

Lesson Flow

After an initial exploratory lesson that gets students thinking in general about geometry and its application in real-world contexts, the unit is divided into two concept development sections: the first focuses on two-dimensional (2-D) figures and measures, and the second looks at three-dimensional (3-D) figures and measures.
The first set of conceptual lessons looks at 2-D figures and area and length calculations. Students explore finding the area of polygons by deconstructing them into known figures. This exploration will lead to looking at regular polygons and deriving a general formula. The general formula for polygons leads to the formula for the area of a circle. Students will also investigate the ratio of circumference to diameter ( pi ). All of this will be applied toward looking at scale and the way that length and area are affected. All the lessons noted above will feature examples of real-world contexts.
The second set of conceptual development lessons focuses on 3-D figures and surface area and volume calculations. Students will revisit nets to arrive at a general formula for finding the surface area of any right prism. Students will extend their knowledge of area of polygons to surface area calculations as well as a general formula for the volume of any right prism. Students will explore the 3-D surface that results from a plane slicing through a rectangular prism or pyramid. Students will also explore 3-D figures composed of cubes, finding the surface area and volume by looking at 3-D views.
The unit ends with a unit examination and project presentations.

Subject:
Geometry
Mathematics
Provider:
Pearson
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CC BY-NC
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Students will continue to explore surface area, looking at more complex solids made up of cubes. Students will look at the 2-D views of these solids to see all of the surfaces and to find a shorter method to calculate the surface area.Key ConceptsThe 2-D views of 3-D figures (front top and side) show all of the surfaces of the figure (the area of the three views is doubled or the back, bottom, and other side) and so can be used to calculate surface area. The only exception is when surfaces are hidden or blocked and must be accounted for.GoalsExplore the relationship between 2-D views of figures and their surface area.Find the surface area of different solids.

Subject:
Geometry
Material Type:
Lesson Plan
Author:
03/01/2022
Educational Use
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Learn about the relationships between two- and three-dimensional objects with the Odd Squad. A new villain is on the loose, and he's flattening things around town. Olive and Otto are on the case!

Subject:
Mathematics
Material Type:
Audio/Video
Provider:
PBS LearningMedia
11/06/2023
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Learn about the trajectories in two dimensions through simulation and examples. Some of the concepts identified are motion and velocity.

A free CK-12 account is required to view all materials.

Subject:
Science
Material Type:
Interactive
Provider:
CK-12 Foundation
Provider Set:
CK-12 Simulations
11/15/2023
Educational Use
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Student groups use a "real" 3D coordinate system to plot points in space. Made from balsa wood or wooden dowels, the system has three axes at right angles and a plane (the XY plane) that can slide up and down the Z axis. Students are given several coordinates and asked to find these points in space. Then they find the coordinates of the eight corners of a box/cube with given dimensions.

Subject:
Engineering
Mathematics
Science
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Ben Burnham
09/18/2014
Educational Use
Rating
0.0 stars

Here is a huge collection of teacher resources for teaching 2-D and 3-D shapes. Includes flash, smartboard, and powerpoint presentations, as well as worksheets and helpful hints.

Subject:
Mathematics
Material Type:
Teaching/Learning Strategy
Provider:
Primary Resources (Gareth Pitchford)
12/01/2023
Educational Use
Rating
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A net is a two-dimensional version of a three-dimensional solid. Watch this tutorial for an introduction to nets. [5:25]

Subject:
Mathematics
Material Type:
Audio/Video
Provider:
Virtual Nerd