Scratch is a great tool to teach kids to create simple games. In this resource includes links to lessons on creating simple games such as Tic-Tac-Toe and Sudoku.
A paper describing one experience of teaching Scratch in a primary school in England and discusses possibilites for embedding Scratch into the wider curriculum.
An introduction to story telling in Scratch. Students develop a "Three Act Play", using three different scenes (one for each "Act"). A rubric and demo video are included.