Fold a paper heart in half and open it again, and most five-year-olds gasp a little when both sides match. This kindergarten line of symmetry worksheet builds on that moment of surprise. It shows three shapes on small blue grids: a purple circle, a green star and a pink pentagon. A red dashed line runs down the middle of each one, and the child ticks yes or no to say whether the two sides match. The grid squares help children check, because they can count how far each side reaches. A funny cartoon face with big glasses peeks in from the corner. The PDF has two pages: the worksheet, then its answer key.