Yes you will be using the same kit for PK-5th grade because all activities
are age-appropriate for these grades. And yes you will be using the same
core activities for all grades. But you will find that:

1. Most activities have suggestions and enhancements that provide more
advanced versions for older kids, or pre-literate versions of the games for
younger kids. So the same basic activity is adapted to meet the grade level
and these instructions are included in the manual.

2. Additional alternative activities are provided that you can use with the
older children that may move through the curriculum at a faster pace.