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Flip, Turn, and Slide

This topic introduces the three basic ways a shape can move: sliding (translation), flipping (reflection), and turning (rotation). Students learn to recognize and describe each movement using simple visual examples, building a foundation for later work with geometric transformations.

Introduction

Shapes can move around a page in three simple ways: they can slide, flip, or turn. None of these movements changes the size or shape of the figure itself, only where it is or which way it faces. Learning to tell a slide from a flip from a turn is one of the first steps toward understanding geometric transformations later on.

What Are Flips, Turns, and Slides?

Each of these three words describes a different kind of movement.

Slide: the shape moves in one direction (up, down, left, right, or diagonally) without spinning or flipping.
Flip: the shape is mirrored across a line, like looking at it in a mirror, so it now faces the opposite way.
Turn: the shape spins around a fixed point, like a hand on a clock.

Before comparing them, it helps to picture each one on its own. Understanding where a shape sits also connects to earlier ideas like location in a grid, since a slide, flip, or turn always changes a shape's position or facing relative to its starting spot.

Slide (Translation)

A slide moves a shape from one place to another in a straight path. The shape does not spin and does not flip, it simply travels the same distance in the same direction, so it looks exactly the same, just in a new spot.

Notice that both triangles point the same way, upward, with the same shape and size. Only the position has changed.

Flip (Reflection)

A flip mirrors a shape across a line. If you imagine a line drawn on the page and folded like a mirror, the flipped shape lands exactly opposite to where it started, facing the reverse direction.

The two triangles are the same size and shape, but the second one faces the opposite direction, like a reflection in glass.

Turn (Rotation)

A turn spins a shape around a fixed point. The amount of spin can be a small turn or a much bigger one, but the shape's size never changes, only its facing direction as it rotates around that point.

The dot marks the point the triangle turns around. The shape rotates in place instead of sliding away or mirroring across a line.

Comparing the Three Movements

A quick way to tell the movements apart is to ask what happened to the shape's facing direction and position.

Movement	What happens	Does the facing direction flip?
Slide	Shape moves in a straight direction	No
Flip	Shape mirrors across a line	Yes
Turn	Shape rotates around a point	Only the angle changes, not a mirror image

This idea of tracking position also builds on skills like describing objects as above and below or beside and next to each other, since every slide, flip, and turn changes how a shape sits relative to its surroundings.

Tips for Identifying Flips, Turns, and Slides

Check if the shape still points the same way. If it does, look for a slide or a turn.
Check if the shape looks mirrored, like its left and right sides swapped. That signals a flip.
Look for a fixed point the shape seems to spin around. That signals a turn.
If the shape simply moved to a new spot without spinning or mirroring, that is a slide.

Related lessons

Math 1