Mix-Max-Fun for Learning Letters. What goes together? Always 2 flaps provide the solution. But which letter matches which initial sound image? The back shows whether you are correct. This way, children can playfully get to know the letters. No pen required: The tasks can be solved completely without a pen and can be done anywhere. No reading skills needed: The tasks are self-explanatory. With solution check: On the back, children can check for themselves if they are correct. Convenient for on-the-go: The handy format with practical spiral binding is ideal for long car rides, waiting times, or restaurant visits. Perfect gift for preschoolers: An ideal present for children aged 3 and up. The Learning Caterpillar is an exciting learning series specifically designed for preschoolers that combines learning and play. Success experiences create a desire for more and strengthen self-confidence.