In a small sauce pan, bring sugar and water to a boil. Remove from heat and let cool to room temperature.

Place strawberries into a food processor or blender and process/blend until smooth.

Pour pureed strawberries into the sugar water. Add lemon juice. Stir well.

Pour strawberry lemon mixture and cold water into a large pitcher. Stir well and add ice. Pour into glasses and top with chopped strawberries and a lemon slice.