Collaboration Activity (good for mentor time) from: In the middle: Life as a seventh grade language arts teacher. The Cup Challenge - teach students how to work in cooperative groups with this simple and fun challenge.
Kiwi birds lay the largest egg in proportion to its body. The egg is equivalent to of the bird’s body mass. To compare, ostrich’s egg is equivalent to of the mother’s body mass, while a newborn human accounts only for of the mother’s body mass.