Khan Academy
Khan Academy: Equation Practice With Midpoints
Given information about the distance of a segment's midpoint from its endpoints, form and solve an equation in order to find the length of the segment. Students receive immediate feedback and have the opportunity to try questions...
Illustrative Mathematics
Illustrative Mathematics: G Mg How Many Leaves on a Tree? (Version 2)
In this task, students must estimate the number of leaves on a large tree, taking into account various complex factors such as the area shaded by the tree, the area of irregularly shaped leaves, the uneven distribution of leaves, the...