ALEX Classroom Resources

   View Standards     Standard(s): [MA2019] (0) 20 :

20. Identify shapes as two-dimensional (lying in a plane, "flat") or three-dimensional ("solid").

[MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

[MA2019] (1) 22 :

22. Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

In this video segment from Eureeka!, the CyberSquad pulls up the flat sides of a 2-dimensional net to make a 3-dimensional building.

   View Standards     Standard(s): [MA2019] (0) 20 :

20. Identify shapes as two-dimensional (lying in a plane, "flat") or three-dimensional ("solid").

[MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

[MA2019] (1) 22 :

22. Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

This video explores 3-D shapes with Lily Fincher and Omar Etman.

   View Standards     Standard(s): [MA2019] (0) 20 :

20. Identify shapes as two-dimensional (lying in a plane, "flat") or three-dimensional ("solid").

[MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

[MA2019] (1) 22 :

22. Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

Using shapes and patterns this activity morphs 2D shapes into 3D forms. This four page, printable exercise is designed to be completed independently and requires scissors and glue or tape.

   View Standards     Standard(s): [MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

In this interactive activity, students will be led through steps to identify edges, faces, and vertices of solid figures. There are teaching activities as well as practice activities available. A handout that describes strategies taught during the interactive is available to be printed. After utilizing this resource, the students can complete the short quiz to assess their understanding.

   View Standards     Standard(s): [MA2019] (0) 20 :

20. Identify shapes as two-dimensional (lying in a plane, "flat") or three-dimensional ("solid").

[MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

Learn about three-dimensional objects with the Odd Squad. Oscar trains agents on how to use the Odd Squad tube system.

   View Standards     Standard(s): [MA2019] (0) 21 :

21. Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (number of sides and vertices or "corners"), and other attributes.

Example: Having sides of equal length.

[MA2019] (0) 23 :

23. Use simple shapes to compose larger shapes.

Example: Join two triangles with full sides touching to make a rectangle.

Two-Headed Monster has arrived to demonstrate the rectangle shape. The problem is, they don't seem to know what a rectangle looks like. Instead, they pull out two triangles. They discover, however, that two triangles can be used to make one rectangle. This resource teaches shapes.