- See the baby show a preference for large groups that change in number (this is the same video as in “Number Senser: Foundations” in the “Recognition of Number and Subitizing” learning trajectory).
- Children appear to recognize that two very small collections have the “same number” consciously by 10 months of age. Between 9 and 11 months, they develop the ability to detect a change in the direction of ordinal sequences (e.g., from getting bigger to getting smaller).
Help your student become a(n) Comparison Senser: Foundations
Activities encourage explorations of and talk, often first modeled by an adult, about quantities (many, only one, more, fewer, less, etc.) everywhere possible in natural conversations. Number words are promoted too.
Numbers at Home