Preheat oven to 425 degrees. Line a large baking sheet with parchment paper. In the bottom of a large, wide-ish bowl, whisk flours, baking powder, sugar and salt together. Add butter, either by cutting it in with two knives or a pastry blender. Cut it into the flour mixture with a pastry blender, breaking it up until the mixture resembles a crumbly meal with tiny pea-sized bits of butter about. Gently stir in the strawberries, so that they are coated in dry ingredient, then stir in heavy cream. Do not worry about getting the dough evenly mixed. It’s far more important that the dough is not overworked.