Unit 1: Addition and Subtraction within 10 (Heuristics: Systematic Listening) Unit 2: Shapes and Patterns (Heuristics: Mathematical Investigation with Shapes) Unit 3: Addition and Subtraction within 20 (Heuristics: Look for A Pattern/ Numbers) Unit 4: Addition and Subtraction within 40 (Heuristics: Look for A Pattern/Numbers) Unit 5: Multiplication(Heuristics: Working Backwards) Unit 6: Division (Heuristics: Make a Table) Unit 7: Addition and Subtraction within 100 (Heuristics: Mathematical Investigation with Numbers) Unit 8: Money (Heuristics: Guess and Check)