This is TWO sets of 24 task cards (48 cards total) designed to give kids practice using a proportion to solve problems involving a variety of rates. Each rate is presented on 2 cards with each giving a different approach to the rate. Each of the 24 card sets are available in separate listings for $3 per set.
I teach above level 5th grade math, and I created the first set of task cards for their first real practice with applying rates in problem solving situations. I realized that the kids were having trouble with problems that involved halves (either in the ratio, or involving a rate that isn't a multiple of the number presented in the question). Then I designed the second set (Set A) specifically to give kids practice with halves and some trickier rates to interpret.
I made several copies of the cards (I printed this set at half-size) and had the kids work with partners to solve the questions. There were definitely a few challenging cards. I walked around and sat with different teams to talk through some of the problems as they worked. I was impressed with the level of mathematical discussion the cards brought out in kids.
This is a 16-page PDF file that consists of 12 pages of task cards (4 per page), two different 1-page recording sheets with partially completed proportions, and two corresponding 1-page answer keys.