The first memory transmitted to Jonas in The Giver is a memory of snow and sledding down the hill. As a part of achieving Sameness in the community, all weather variations and potential difficulties or discomforts - such as snow might create - have been eliminated. Therefore, the experience of snow is completely new and unexpected for Jonas.
Now he became aware of an entirely new sensation: pinpricks? No, because they were soft and without pain. Tiny, cold, feather-like feelings peppered his body and face. He put out his tongue again, and caught one of the dots of cold upon it. It disappeared from his awareness instantly; but he caught another, and another. The sensation made him smile.
Transmission of the memory was exhausting for the Giver but exhilarating for Jonas. The speed of movement on the sled, the excitement of the changing scenery, the adventure of the completely new activity - all were exciting and reassuring to a still somewhat apprehensive Jonas.