The project concept I've submitted for this summer is a 6 hour/day project, 4 hours of Algebra and 2 hours of kit building. This would fulfill the Algebra requirement, and the kit building opens the door to many practical applications of the math. It also provides incentive to DO the math - no kit building until the day's Algebra is completed. Peer pressure can be a wonderful thing.....

Why kits instead of original designs? First, in order to get two semesters of Algebra credit, they must have 120 hours of Algebra instruction. That leaves 60 hours, which isn't enough time. Second, the class will be ~40% larger than in the past. Third, the amount of tools, wood, supplies and incedentals required for original designs is immense. Fourth, I have amassed a substantial collection of kits over the years and will donate the needed kits - and I have multiple sizes of the same designs, which opens up an exploration of ratios, proportions, fractions, measurement......

Additionally, students will benefit from reading/following instructions....

Kits I have in mind (and on hand):
2 CGM Tiger 60s
2 CGM Tiger 40s
2 Midwest AeroSport 60s
2 Midwest AeroSport 40s
2 Midwest AeroSport 20s
1 TF Sierra as a teacher project/demo/class trainer.