Preheat oven to 375°.
Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and sugar in a medium bowl; cut in butter with a pastry blender or 2 knives until mixture resembles coarse meal. Stir in almonds.
Combine pear and lemon juice in a large bowl. Spoon pear mixture into an 8-inch square baking dish; sprinkle with crumb mixture. Bake at 375° for 50 minutes or until golden brown. Spoon pear mixture evenly into 8 bowls; top each serving with 1/4 cup frozen yogurt and 1 1/2 teaspoons syrup.