Place the sliced strawberries in large bowl with the sugar. Stir until sugar begins to dissolve. Cover with plastic wrap and let stand at room temperature for 1 hour.
Place the strawberries in a blender or food processor. Add the yogurt and fresh lemon juice. Pulse until strawberries are smooth.
Chill mixture for at least 1 hour, then freeze in your ice cream maker according to the manufacturer’s instructions.