Science 10 - Students in periods 1 & 3 wrote a quiz today on balancing equations. Several students are still experiencing difficulties with this topic and are urged to view the video by following the link on my main page. These students are also asked to continue working on the problem sheet that I handed out and check their answers as they proceed. Students in period 6 watched the video on balancing equations and continued working on their work sheet. They will have a quiz tomorrow.   Science 9 - Students wrote a short quiz on organelles today. Students were also given a brief introduction to the compound light microscope and how it should be used. Students will be going to the lab on Thursday as they will be at work tomorrow and will complete a lab on mitosis.