I learned this by doing several experiments.
We drew a picture of a car activity and labelled negative and positive sides. Then we learned how to make dot diagrams and turn those dot diagrams into charts. (position vs. time)
We also learned to switch the axis's. When something is headed toward the negative side the graph needs to be adjusted. We can draw this graph by making a big plus sign and labeling the positive and negative sides of the y and x axis. Then you draw your graph going down into quadrant 4, or the positive x negative y box.
We experimented with how to draw graphs of things not moving and how to make graphs curve. We also made our own situations to pre-existing graphs.
Then we learned how to compare dot diagrams and graphs. We learned about positive and negative motion. when a line on a graph is going up, it is positive motion, when it is going down it is negative motion.
Lastly we learned to make index's for different kinds of popcorn brands to find out which pops fastest. An index is a number that helps to compare things. It is similar to a ratio.
It is important to know these things because then you can show how things are moving and discover important things like when two asteroids will collide or two objects. Also, this will help you understand and help you make graphs in math class, when you have to do similar things. Overall, I think it is important to know these things to explain and understand motion.
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