Task# Distance across the channel

Illustrative MathematicsVaries

This task asks students to find a linear function that models something in the real world. After finding the equation of the linear relationship between the depth of the water and the distance across the channel, students have to verbalize the meaning of the slope and intercept of the line in the context of this situation. Students find this quite hard the first few times they are asked to interpret slopes and intercepts. It is important to give the students repeated opportunities to make connections between mathematical objects and their real world meaning.