For tomatoes: in olive oil, cook white parts of scallions 1-2 minutes.
Add tomatoes, salt& pepper and heat 1-2 minutes until softened.
Add dark green parts and set aside.
For fritters: Whisk together cornmeal, flour, salt, pepper,sugar, and baking soda in a bowl in another bowl whisk together milk, and egg, then add to the dry ingredients add corn.
Heat vegetable oil in a large skillet.
Add batter by the tbsp, cooking 4 at a time, and fry until browned, about 2 minutes per side remove to drain on paper towels and keep warm.
For arugula: whisk together vinegar, mustard, oil, salt& pepper.
Add arugula, toss to coat.
To serve, place 2 fritters on each plate to the side, add arugula to the other side, place cherry tomatoes in the center.