Double win with a comprehensive worksheet and an excellent worked out answer key. The worksheet itself is twelve pages and begins with the simple sine and cosine graphs, then, develops into the reciprocal trig functions. 

It might not be easy, but it is worth recycling electronics. Small groups determine the percentage of the materials that make up an iPad 2 and display the information in a circle graph. They then research the recycling process for...

Sometimes the best things are already done for you! Here is a six-problem quiz that has a variety of problems ranging from solving quadratic equations to interpreting a function. The piece-de-resistance is the worked out answer key in...