In a saucepan over medium heat, whisk together sugar, water, and cornstarch until smooth.
Cook while stirring constantly until the mixture thickens and turns clear.
Remove from heat and stir in the strawberry gelatin until dissolved.
Allow the mixture to cool slightly.
Arrange the fresh strawberries in the pie crust, then pour the gelatin mixture evenly over the strawberries.
Refrigerate for at least 4 hours or until set before serving.