As of today, all FreshChoice and SuperValue Supermarkets will have the posters by the 23 items to encourage customers to learn the Maori word.
The resources were developed with assistance from Abacus Montessori Preschool in Christchurch.
FreshChoice and SuperValue Supermarkets have set up a photo competition where parents and teachers can upload photos of their activities using the posters and colouring-in books to share with other parents and schools.
All entries will be in the draw for three chances to win $250 of Huia books.
The competition closes on August 9.
This year's theme for Maori Language Week is: 'Whāngaihia te reo Māori ki ngā mātua': helping parents to pass te reo on to their children.