This project is a great way to practice the new common core mathematical practices. One of the major pitfalls I see is that the students could easily get side tracked.

proportions, tips, area of a circle, probability 5 different projects

The topics are standards-based and of global interest. Each project is designed to be used as is or customized to your classroom's needs. An easy way to find a classroom with which to partner is to check the "Connect with Classrooms" forum on the project index page for posts by interested classrooms. Topics include holidays and festivals, digital storytelling, spanish, global warming, habitats, weather, and natural disasters.

This is a multiple unit lesson plan that is intended to cover many of the strands of 7th grade mathematics including all operations of integers, order of operations, rational numbers, scientific notation, properties, and equations. Students explore how to make money through small businesses and use real data to learn that business can be profitable or can cause debt. One of the pitfalls may be the time needed to complete all of the units.