This print and cut half-sheet pairs perfectly with the story "Sheep in a Jeep" by Nancy Shaw. It also gives the teacher assessment tools through student self-assessment of their designs.
In the story, the sheep get stuck in the mud. Students need to problem solve how they would get the jeep out using simple machines (ramps, pulleys, etc).
1) Students plan a design
2) Students test the design (materials: blocks, rope/twine, pulleys, hotwheels)
3) Students self-assess their work