Any. Most popular I've seen as whole school productions are:
Rata and the waka.
Uenuku and HInepukohurangi.
Tutanekai and Hinemoa.
Te Aohurhurhu
I always had a soft spot for the maori legends of tribal mountains. Take for instance the legend about Tarawera, Putauaki and Whakaari. A love triangle that is always a great heart pulling story to depict in modern times such as these.
a good question is when did legends become legends
good = ka pai
A good read would be Jade Taniwha by a NZ Maori / Chinese author Jenny Bol Jun Lee.
Good.
A good speech topic on Maori culture could be discussing the significance of traditional Maori beliefs and practices, the impact of colonization on Maori communities, or the importance of preserving and celebrating Maori language and arts in today's society.
A Maori dictionary could be found in many places. It depends on if you want to purchase the dictionary or just look at it. The reference area of your local library would be a good place to start.
ka pai.
Star Legends or pocket legends is a good game if you have good mobile conection or good wifi
In Maori, you say "Kia kaha" which can be translated as "stay strong" or "good luck".
Kia manuia - Good luck
In Maori, you can say "morena" which means good evening.
To say "that's good" in MΔori, you would say "Kei te pai".