This is a set of 20 task cards that I created to use with my students as they learn how to apply proportional reasoning skills.
This is SET TWO, which uses the same shapes as SET ONE (separate listing), but the scales are different.
I realizes after using Set One that many of my students were having trouble with halves (either in the measured distance or in the scale). Some of the kids were just tacking on the half after they got an answer and not realizing that the half had to scale, also. I made these cards to include many more problems that forced students to interpret the halves. (I also print the cards directly to a printer because I have issues with the copier at my school slightly shrinking images and it throws off the measurements.)
Twelve of the cards have a shape and students are given the scale. They must measure the shape with a ruler (cm or inch) and then calculate the actual size. The final eight cards give the shape and tell the students the actual size of the object. They must work backwards to find the scale (1 cm = n). The measurements fall either on the whole inch/cm or the half inch/cm, and the cards range in difficulty level from basic to challenging.
I used these to help students with proportional thinking (Common CORE 6.RP.3), but they also address Common Core 7.G.1.
This is a 7-page PDF file that included 5 pages of task cards (4 per page), a 1-page recording sheet, and a 1-page answer key.