Science 10 - Students had a quiz today on writing word equations and the Law of Conservation of Mass. Students then continued working on balancing chemical equations. We will continue this work on Monday. Students are to complete the questions in their textbook (1 - 4 on page 229) and the first 20 on the worksheet I handed out for Monday.   Science 9 - Many students did not complete the homework from the previous day covering organelles. Homework is not given as a punishment, it is to reinforce what was covered in class. There will be a quiz on Monday covering organelles so students who did not complete their homework must do so over the weekend. We began looking at cell division today in class. Students were assigned 2 homework questions from their textbook as well.