Every instructional decision has its pros and cons, and constructivism is no different. This slideshow provides a nice visual comparison of both the positives and the negatives of using constructivism in your classroom. Use this to help decide if it is right strategy for your students.
Here are a total of 12 curriculum, instructional, and assessment constructivist practices that you can include in your instruction right now. You can include all of them in your lessons or include the practices in just the areas that you feel will be most impactful for your students.