learning the concept of one. your child will learn that the word "one" is talking about "how many" items there are (one!). math. level 2: 9 - 18 months. 15m. filtered (1) filters clear filters ×. math ×. community ×. counting cardinality ×. creative expression ×. executive function ×. logic and reasoning ×. relationships and interactions ×. sense of place (geography) ×. 15m ×. level 2: 9 - 18 months ×. approaches to learning(1). creativity(2). math(1). geometry, spatial awareness shapes(1). counting cardinality(1). 10m(1). 15m(1). level 2: 9 - 18 months(1). level 4: 3 - 4 years(3). level 3: 19 - 36 months(2). level 5: 4 - 5 years(5). learning throughout the day(1). searchsearch× show (1) cancel clear filters ×. math ×. community ×. counting cardinality ×. creative expression ×. executive function ×. logic and reasoning ×. relationships and interactions ×. sense of place (geography) ×. 15m ×. level 2: 9 - 18 months ×. learning the concept of one. your child will learn that the word "one" is talking about "how many" items there are (one!). math. level 2: 9 - 18 months. 15m.