CC2 2.2.3: 2-58 Student eTool (CPM)
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1. The user can:
- Drag tiles from the tray to the Display area.
- Click tiles to change color to black.
- Drag a textbox to the display area to label or explain.
2. Build the expressions by:
- Displaying the correct number of positive and negative tiles.
- Clicking tiles which result in a value of 0 turning them black.
- Using a textbox to write the answer.