N1.3 Demonstrate an understanding of counting by: indicating that the last number said identifies "how many", showing that any set has only one count using the counting on strategy, using parts or equal groups to count sets.
N1.3.a Answer the question, "How many are in the set?" using the last number counted in a set.
N1.7 Demonstrate, concretely, physically, and pictorially, how whole numbers can be represented by a variety of equal groupings with and without singles.
N1.7.a Represent a whole number in a variety of equal groupings with and without singles (e.g., 17 can be represented by 8 groups of 2 and one single, 5 groups of 3 and two singles, 4 groups of 4 and one single, and 3 groups of 5 and two singles).
N1.9 Demonstrate an understanding of addition of numbers with answers to 20 and the corresponding subtraction facts, concretely, pictorially, physically, and symbolically by: using familiar and mathematical language to describe additive and subtractive actions from their experience, creating and solving problems in context that involve addition and subtraction, modelling addition and subtraction using a variety of concrete and visual representations, and recording the process symbolically.
N1.9.a Act out a story problem presented orally or through shared reading.
N1.9.b Indicate if the scenario in a story problem represents additive or subtractive action.
N1.10 Describe and use mental mathematics strategies (memorization not intended), such as: counting on and counting back, making 10, doubles, using addition to subtract to determine basic addition facts to 18 and related subtraction facts.
N1.10.a Use and describe a personal strategy for determining a sum.
SS1.1 Demonstrate an understanding of measurement as a process of comparing by: identifying attributes that can be compared, ordering objects, making statements of comparison, filling, covering, or matching.
SS1.1.a Identify common attributes, including length, height, mass, volume, capacity, and area that could be used to compare two objects.