Florida B.E.S.T. MA.8.GR.2.1
The Standard
Given a preimage and image generated by a single transformation, identify the transformation that describes the relationship.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students compare a figure with its image and decide whether it was translated, rotated, reflected, or dilated. They use coordinates, orientation, distances, and side lengths to justify the choice.
What Mastery Looks Like
- Students correctly name the transformation by comparing corresponding points and side orientation. They also describe it precisely, including direction and distance, center and angle, reflection line, or scale factor.
Common Misconceptions
- Students may name a translation when the figure has been reflected or rotated. They may give the wrong rotation direction, reflection line, translation vector, or dilation scale factor. They also may compare noncorresponding vertices.
How to Assess It
- Give two polygons on a coordinate grid. Ask students to name the single transformation and state its needed details, such as vector, angle, line, or scale factor.
Lesson moves
Ways to Teach It
Trace a polygon on transparency film, then slide, turn, flip, or resize it to match a second polygon.
Show two figures and ask, “What changed, what stayed the same, and which single transformation explains both?”
Run a card sort matching preimage-image pairs with translation, rotation, reflection, or dilation description cards.
Examine repeating wallpaper or floor-tile designs and label one transformation that maps a chosen shape onto another.
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Printable MA.8.GR.2.1 Worksheet
A ready-to-print activity worksheet aligned to MA.8.GR.2.1, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MA.912.GR.2.3
Identify a sequence of transformations that will map a given figure onto itself or onto another congruent or similar figure.
- MA.912.GR.2.1
Given a preimage and image, describe the transformation and represent the transformation algebraically using coordinates.
- MA.912.GR.2.8
Apply an appropriate transformation to map one figure onto another to justify that the two figures are similar.
- MA.8.GR.2.2
Given a preimage and image generated by a single dilation, identify the scale factor that describes the relationship.
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