New Page — Culture and Cognition: Cultural Development of Mathematical Ideas

1978. Elderly man displaying the 27-body part counting

1978. Counting beyond the 27th position.

1978. A scene from the Baptist mission trade store

1978. Successive exchanges for purchase of tinned fish

2001. Woman displaying 27-body part count system

1980. Oksapmin tradestore owner solving K1.60-K.70=?

1980. Class solving an arithmetic problem with some using body.

2001. Teacher didn't show and children showed knowledge of count system.

2001. Representing K1.10 with the body system

1980. Oksapmin child displaying arithmetic strategy

2001. "Middle men" paying local people for vegetables.

Copy of 2001. Representing K1.10 with the body system

2014. Teacher interview about body system in classrooms