The green button on the mouse is used as the "enter" key. To access the workbook mode select the green workbook key. The screen will then show "011". Move your mouse to the right then push it upwards so that "031" appears. Press the green button to confirm. 001 is now displayed. Now you can start using your workbook. Follow the activities on the book and try to answer the questions. To do so you can move the mouse upward (blue), downward (yellow), right (green) or left (red). The colours are marked around the mouse too! You can find more instructions on the workbook!