Students explore the four ways a shape can move on a coordinate grid — translation, reflection, rotation, and dilation — and learn which ones keep the shape the same size (congruent) and which change it.
Students will be able to…
You can slide, flip, or spin a shape and it stays the same size — or stretch it to a new size. How do we describe each kind of move mathematically?
Project this and apply each transformation to the triangle. Compare the image (blue) to the original (gray) and see how the coordinates change.
Tap any phase to open the teacher moves and student actions.
Slide, flip, or spin a shape — is it still the “same” shape?
Teacher models.
Class drives the Transformation Tool.
Students transform shapes.
One transformation.
Aligned to the Common Core State Standards for Mathematics, including the Standards for Mathematical Practice.
Verify properties of rotations, reflections, and translations.
Describe the effect of transformations on two-dimensional figures using coordinates.
Understand congruence through a sequence of transformations.
Understand similarity through transformations including dilations.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students apply two transformations in a row (like a reflection then a translation) and describe the single move that would do the same thing. A printable transformations sheet is in the Math library.
Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.
A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.