Academic standards

- CCSS.Math.Content.4.G.A.1
- Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
- CCSS.Math.Content.4.G.A.2
- Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a...
- CCSS.Math.Content.4.MD.C.5
- Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:
- CCSS.Math.Content.4.MD.C.6
- Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
- CCSS.Math.Content.4.MD.C.7
- Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle...
- CLE 3108.1.4
- Move flexibly between multiple representations (contextual, physical written, verbal, iconic/pictorial, graphical, tabular, and symbolic), to solve problems, to...
- CLE 3108.4.1
- Develop the structures of geometry, such as lines, angles, planes, and planar figures, and explore their properties and relationships.
- GLE 0406.4.1
- Understand and use the properties of lines, segments, angles, polygons, and circles.
- SPI 0406.4.1
- Classify lines and line segments as parallel, perpendicular, or intersecting.
- SPI 0406.4.4
- Identify acute, obtuse, and right angles in 2-dimensional shapes.
- SPI 0406.4.5
- Identify attributes of simple and compound figures composed of 2- and 3- dimensional shapes.
- TSS.Math.4.G.A.1
- Draw points, lines, line segments, rays, angles (right, acute, obtuse, straight, reflex), and perpendicular and parallel lines. Identify these in ...
- TSS.Math.4.MD.C.5
- Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement.
- TSS.Math.4.MD.C.6
- Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
- TSS.Math.4.MD.C.7
- Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures...

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Essential and guiding questions:

Why is it important to have a good definition for angles and angle pairs?

What are the limits of geometrical representations and modeling?