This is aligned with the following California State Standards:
Combine two or more sets of objects to form a new set. Compare two or more sets containing objects to communicate whether a set has the same, different, or an equal number of objects than the other set.
Demonstrate understanding of addition by combining the objects of two or more sets, and demonstrate understanding of subtraction by removing some objects from a larger set.
Represent addition or subtraction word problems or models with equations (e.g., 8 marbles + 3 marbles = 11 marbles). Recognize that the unknown quantity in an equation is represented using a symbol or letter (e.g., 5 + b = 8).
ression that is equivalent to a given expression (e.g., 3 + 4 + 5 is equivalent to 4 + 3 + 5). Evaluate an equation to be true or false by determining whether the numerical value on both sides of an equation is the same or different (e.g., analyze whether 5 + 7 = 8 + 4).
Recognize equivalent expressions by applying commutative and associative properties of addition (e.g., the expression 5 + 8 is equal to 8 + 5 due to the commutative property of addition).