This is a set of 36 task cards designed to support Core Standard 7.RP.A.2.A, which has students take quantities from a table and test for proportionality. These cards provide coordinate grids for each data table. Students graph the data points and test to see if they meet two criteria: 1) They must form a straight line, and 2) The line, when extended, must pass through the origin (0,0). The coordinate grid is shown both on each task card, and duplicated on the student recording sheet.
Some of the quantities presented will not form a line when graphed, and others are not in proportion because although they form a line, the line does not pass through the origin. (And, of course, others meet both criteria!)
I have found few resources that support this standard, and my students needed a lot more practice than those would provide. I'm really pleased with the amount of practice these cards will give my students.
I have included a blank of the task card and the answer sheet if you'd like to to create other problems that support this standard. This file is extremely graphics-intensive. When display on the computer screen, particularly if it's scaled, it will sometimes looks like graphics have shifted. It prints perfectly, though, with no graphics issues.
This is a 20-page PDF file. It contains 9 pages of task cards (4 per page) and a 1 page blank. The recording sheet for students is 4 pages long because of the mini-coordinate grids. There is space for 9 problems per page. There is also a blank of that sheet for teacher use, and a complete 4 page answer key with lines graphed.