Question

Problem #2 - Group cards together with the movement needed to move the blue shape to the white shape in a single step.
A card sort is on the screen. To start dragging a card, Tab to it and press M to mark it. Next, Tab to the card where you want to drop, and press J to join the two cards together. To unjoin the selected card from a group, press U.
Reflection

Rotation

Translation

Answer 1

I can’t see your screen, so I can’t tell which movement goes with which card. Here’s how to decide and how to group them using the keyboard commands you gave.

How to identify each transformation
- Translation: the blue shape is the same orientation and size as the white shape but shifted (moved) to a different location. No flipping or turning.
- Rotation: the blue shape is the same shape and size but turned around a point (e.g., 90°, 180°). Orientation changes but it is not mirrored.
- Reflection: the blue shape is the mirror image of the white shape (left/right reversed) across a line; orientation is reversed.

Keyboard steps to group cards
1. Tab to the card that shows the movement you want to attach (or to the blue/white pair—use whichever the sort expects). Press M to mark it.
2. Tab to the card you want to drop it onto (the matching movement card). Press J to join them.
3. If you make a mistake, Tab to the selected card and press U to unjoin it, then re-attach correctly.

If you can describe the positions/orientations of the blue and white shapes (or paste a screenshot), I’ll tell you which of Reflection / Rotation / Translation is the correct match.