This is another PBL Math instruction I recently used in class for Radicals and Powers chapter in Math 10. The idea was from a clock of another Math teacher she got from Canada which is similar but of simpler expresions, mostly using small numbers and basic arithmetic operations. I decided to innovate it and ask my students to come up and create their own clock expressions. All clock expressions must be equal to the number of hours and they need to include negative and fractional exponents and other basic Law of exponents expressions.
What do you think?
For more clock designs, check http://teachingmathinchina.weebly.com/project-based-learning.html